EIDP Inc
EIDP IncActive Patents
0
Total Holdings
1784
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| WO1992004410A1 | Films containing polyhydroxy acids and a compatibilizer | Expired / Lapsed | 1991-09-09 | — | 0 | Details |
| WO1992001737A1 | Degradable foam materials | Expired / Lapsed | 1991-06-21 | — | 0 | Details |
| WO1989001320A1 | Soft tissue prosthesis | Expired / Lapsed | 1988-08-15 | — | 0 | Details |
| EP0242952A2 | Composite material containing microwave susceptor materials | Expired / Lapsed | 1987-02-20 | — | 24 | Details |
| EP0172750A2 | Porous structures | Expired / Lapsed | 1985-08-20 | — | 5 | Details |
| EP0159198A2 | Optical fiber termination, process of terminating an optica… | Expired / Lapsed | 1985-04-18 | — | 72 | Details |
| EP0147231A2 | Terminal device for optical fibers | Expired / Lapsed | 1984-12-27 | — | 24 | Details |
| EP0135125A2 | NMR imaging utilizing chemical shift reagents | Expired / Lapsed | 1984-08-10 | — | 10 | Details |
| EP0134660A1 | Polyether polyamines as linking agents for particle reagent… | Expired / Lapsed | 1984-07-09 | — | 8 | Details |
| EP0133205A1 | Cored yarn as a reinforcement structure | Expired / Lapsed | 1984-06-13 | — | 10 | Details |
| EP0112173A2 | Plasmapheresis process | Expired / Lapsed | 1983-12-15 | — | 33 | Details |
| EP0073611A1 | Covalently bonded high refractive index particle reagents a… | Expired / Lapsed | 1982-08-19 | — | 21 | Details |
| EP0047130A2 | Flow analysis | Expired / Lapsed | 1981-08-26 | — | 23 | Details |
| FR2070153A1 | FR2070153A1 - - Google Patents | Expired / Lapsed | 1970-10-23 | — | 0 | Details |
| DE2051580A1 | Polylactide drug mixtures | Expired / Lapsed | 1970-10-21 | — | 0 | Details |
| DE1959146A1 | Orange to ruby red dispersion disazo dyes and methods for m… | Expired / Lapsed | 1969-11-25 | — | 0 | Details |
| DE1544107B2 | HOSE DIALYZER, PROCESS FOR ITS MANUFACTURING AND MULTI-STAG… | Expired / Lapsed | 1966-12-21 | — | 0 | Details |
| DE1468779A1 | Process for the preparation of dicyclohexylamines from dicy… | Expired / Lapsed | 1964-11-03 | — | 0 | Details |
| GB963320A | Improvements in melt spun polyamide filaments | Expired / Lapsed | 1962-10-19 | — | 0 | Details |
| GB904936A | Improvements in or relating to vitreous enamel compositions | Expired / Lapsed | 1961-02-27 | — | 0 | Details |
| DE1132220B | Glaze composition containing metal particles for the produc… | Expired / Lapsed | 1959-10-28 | — | 0 | Details |
| GB899263A | Improvements in or relating to synthetic fibres for blendin… | Expired / Lapsed | 1958-06-26 | — | 0 | Details |
| GB783555A | Improvements in or relating to laminated structures and met… | Expired / Lapsed | 1955-03-09 | — | 0 | Details |
| GB770574A | Colouring compositions containing dyes of the triarylmethan… | Expired / Lapsed | 1955-02-02 | — | 0 | Details |
| GB776156A | Improvements in or relating to werner type complexes and co… | Expired / Lapsed | 1954-02-08 | — | 0 | Details |
| GB758461A | Improvements relating to the surface treatment of polyethyl… | Expired / Lapsed | 1953-11-13 | — | 0 | Details |
| GB712950A | A process for melt spinning polyethylene terephthalate fibr… | Expired / Lapsed | 1952-06-18 | — | 0 | Details |
| GB711279A | Elastic linear copolyesters and process of making them | Expired / Lapsed | 1951-03-06 | — | 0 | Details |
| GB692480A | Improved insulated electrical conductor and process of prod… | Expired / Lapsed | 1950-01-03 | — | 0 | Details |
| GB660398A | Process for obtaining laminated products | Expired / Lapsed | 1949-03-28 | — | 0 | Details |
| GB596007A | Improvements in or relating to resinous compositions | Expired / Lapsed | 1945-07-13 | — | 0 | Details |
| GB595290A | Adhesive compositions | Expired / Lapsed | 1945-07-02 | — | 0 | Details |
| GB588697A | New and improved process for the production of shaped artic… | Expired / Lapsed | 1945-03-05 | — | 0 | Details |
| GB576363A | Improvements in or relating to the production of derivative… | Expired / Lapsed | 1943-06-02 | — | 0 | Details |
| GB550837A | Process for the preparation of condensation products of hyd… | Expired / Lapsed | 1941-07-23 | — | 0 | Details |
| GB458839A | Chitin compounds | Expired / Lapsed | 1935-06-21 | — | 0 | Details |
| US6010539A | Cleaning formulations for textile fabrics | Expired / Lapsed | 1997-10-06 | 2000-01-04 | 20 | Details |
| US5786908A | Method and apparatus for converting image color values from… | Expired / Lapsed | 1993-10-05 | 1998-07-28 | 22 | Details |
| US5756279A | Analyte detection by means of an analyte-responsive polymer | Expired / Lapsed | 1997-05-09 | 1998-05-26 | 3 | Details |
| US5474741A | Method for reducing shrinkage during firing of ceramic bodi… | Expired / Lapsed | 1994-12-21 | 1995-12-12 | 10 | Details |
| US5387474A | Green ceramic composite and method for making such composite | Expired / Lapsed | 1993-08-06 | 1995-02-07 | 9 | Details |
| US5278256A | Rapidly degradable poly (hydroxyacid) compositions | Expired / Lapsed | 1992-09-16 | 1994-01-11 | 23 | Details |
| US5272201A | Amine-containing block polymers for pigmented ink jet inks | Expired / Lapsed | 1992-02-20 | 1993-12-21 | 20 | Details |
| US5270164A | Process for enhancing the chemiluminescence of enzyme-trigg… | Expired / Lapsed | 1993-03-01 | 1993-12-14 | 20 | Details |
| US5192308A | Vascular prosthesis with an elastomer coating | Expired / Lapsed | 1991-04-19 | 1993-03-09 | 11 | Details |
| US4174358B1 | US4174358B1 - - Google Patents | Expired / Lapsed | 1977-04-11 | 1992-08-04 | 0 | Details |
| US5133030A | Fiber optic switch having a curved reflector | Expired / Lapsed | 1991-07-26 | 1992-07-21 | 55 | Details |
| US5128404A | Thermoplastic blow moldable polybutylene terephthalate comp… | Expired / Lapsed | 1990-06-18 | 1992-07-07 | 6 | Details |
| US5115012A | Thermoplastic blow moldable polyester compositions | Expired / Lapsed | 1990-06-18 | 1992-05-19 | 24 | Details |
| US5098804A | Multiplexer-demultiplexer for integrated optic circuit | Expired / Lapsed | 1989-10-16 | 1992-03-24 | 8 | Details |
| US5089088A | Low-density, high strength aramid boards | Expired / Lapsed | 1991-02-28 | 1992-02-18 | 8 | Details |
| US5085698A | Aqueous pigmented inks for ink jet printers | Expired / Lapsed | 1990-04-11 | 1992-02-04 | 26 | Details |
| US5055069A | Connectors with ground structure | Expired / Lapsed | 1990-06-08 | 1991-10-08 | 44 | Details |
| US5000875A | Conductive filled fluoropolymers | Expired / Lapsed | 1990-02-02 | 1991-03-19 | 13 | Details |
| US4958038A | Organotitanium compositions useful for cross-linking | Expired / Lapsed | 1989-03-20 | 1990-09-18 | 33 | Details |
| US4933526A | Shaped microwaveable food package | Expired / Lapsed | 1988-12-01 | 1990-06-12 | 14 | Details |
| US4917495A | Portable colorimeter and method for characterization of a c… | Expired / Lapsed | 1988-12-20 | 1990-04-17 | 23 | Details |
| US4912167A | Polyester compositions for blow molding | Expired / Lapsed | 1987-12-14 | 1990-03-27 | 5 | Details |
| US4902444A | Conductive fluoropolymers | Expired / Lapsed | 1988-10-07 | 1990-02-20 | 12 | Details |
| US4861353A | Filter element and assembly | Expired / Lapsed | 1987-12-07 | 1989-08-29 | 9 | Details |
| US4824618A | Coextrusion blowmolding process | Expired / Lapsed | 1987-12-21 | 1989-04-25 | 12 | Details |
| US4800219A | Polylactide compositions | Expired / Lapsed | 1988-04-28 | 1989-01-24 | 19 | Details |
| US4766182A | Polylactide compositions | Expired / Lapsed | 1987-10-15 | 1988-08-23 | 7 | Details |
| US4753980A | Toughened thermoplastic polyester compositions | Expired / Lapsed | 1986-11-14 | 1988-06-28 | 30 | Details |
| US4725481A | Vapor-permeable, waterproof bicomponent structure | Expired / Lapsed | 1987-02-24 | 1988-02-16 | 32 | Details |
| US4719837A | Complex shaped braided structures | Expired / Lapsed | 1986-04-17 | 1988-01-19 | 14 | Details |
| US4716073A | Thin wall high performance insulation on wire | Expired / Lapsed | 1986-06-02 | 1987-12-29 | 4 | Details |
| US4698372A | Microporous polymeric films and process for their manufactu… | Expired / Lapsed | 1985-09-09 | 1987-10-06 | 61 | Details |
| US4644055A | Method for preparing specific inhibitors of virus-specified… | Expired / Lapsed | 1984-12-17 | 1987-02-17 | 10 | Details |
| US4623481A | Conductive primers | Expired / Lapsed | 1984-09-21 | 1986-11-18 | 7 | Details |
| US4612237A | Hydraulically entangled PTFE/glass filter felt | Expired / Lapsed | 1985-12-13 | 1986-09-16 | 32 | Details |
| US4609479A | Organic titanium compositions and their use as cross-linkers | Expired / Lapsed | 1984-10-09 | 1986-09-02 | 46 | Details |
| US4507119A | Sterile docking process, apparatus and system | Expired / Lapsed | 1982-07-06 | 1985-03-26 | 35 | Details |
| US4499598A | Edge and line detection in multidimensional noisey, imagery… | Expired / Lapsed | 1982-07-02 | 1985-02-12 | 7 | Details |
| US4479718A | Three direction measurements for characterization of a surf… | Expired / Lapsed | 1982-06-17 | 1984-10-30 | 4 | Details |
| US4476293A | Polymeric carbonate diols of copolyether glycols and polyur… | Expired / Lapsed | 1983-01-24 | 1984-10-09 | 5 | Details |
| US4463141A | Polyether carbonate diols and polyurethanes prepared theref… | Expired / Lapsed | 1983-01-24 | 1984-07-31 | 7 | Details |
| US4448679A | Apparatus and method for sedimentation field flow fractiona… | Expired / Lapsed | 1981-11-30 | 1984-05-15 | 15 | Details |
| US4446014A | Sedimentation field flow fractionation channel and method | Expired / Lapsed | 1981-11-30 | 1984-05-01 | 20 | Details |
| US4444817A | Laminar articles of polyolefin and a condensation polymer | Expired / Lapsed | 1982-09-29 | 1984-04-24 | 16 | Details |
| US4443215A | Sterile docking process, apparatus and system | Expired / Lapsed | 1982-07-06 | 1984-04-17 | 30 | Details |
| US4416973A | Radiation-sensitive polyimide precursor composition derived… | Expired / Lapsed | 1982-09-29 | 1983-11-22 | 18 | Details |
| US4406509A | Jack and plug electrical assembly | Expired / Lapsed | 1981-11-25 | 1983-09-27 | 5 | Details |
| US4390785A | Method and apparatus for remotely detecting gases in the at… | Expired / Lapsed | 1980-12-29 | 1983-06-28 | 26 | Details |
| US4371692A | Elastomeric polyetheresterimides | Expired / Lapsed | 1981-10-02 | 1983-02-01 | 8 | Details |
| US4369779A | Sterile docking process, apparatus and system | Expired / Lapsed | 1981-06-04 | 1983-01-25 | 30 | Details |
| US4361619A | Filter of poly(tetrafluoroethylene) and glass fibers | Expired / Lapsed | 1981-05-20 | 1982-11-30 | 12 | Details |
| US4340686A | Carbamated poly(vinyl alcohol) useful as a binder in elasto… | Expired / Lapsed | 1981-01-13 | 1982-07-20 | 3 | Details |
| US4338227A | Ethylene copolymer blends and adhesives based thereon | Expired / Lapsed | 1981-04-24 | 1982-07-06 | 19 | Details |
| US4329419A | Polymeric heat resistant photopolymerizable composition for… | Expired / Lapsed | 1980-09-03 | 1982-05-11 | 11 | Details |
| US4324574A | Felt-like layered composite of PTFE and glass paper | Expired / Lapsed | 1980-12-19 | 1982-04-13 | 12 | Details |
| US4315906A | Cold insoluble globulin, its purification and use | Expired / Lapsed | 1979-05-21 | 1982-02-16 | 49 | Details |
| US4285810A | Method and apparatus for field flow fractionation | Expired / Lapsed | 1980-03-26 | 1981-08-25 | 20 | Details |
| US4278548A | Control of biological growth in reverse osmosis permeators | Expired / Lapsed | 1979-08-20 | 1981-07-14 | 7 | Details |
| US4267288A | Epoxy-urethanes based on copolyesters | Expired / Lapsed | 1979-07-23 | 1981-05-12 | 12 | Details |
| US4261847A | Refrigerant compositions | Expired / Lapsed | 1979-06-25 | 1981-04-14 | 3 | Details |
| US4259472A | Two component oligomeric phosphate/isocyanate composition | Expired / Lapsed | 1980-01-04 | 1981-03-31 | 13 | Details |
| US4252859A | Fluoropolymer blend coating compositions containing copolym… | Expired / Lapsed | 1978-10-31 | 1981-02-24 | 20 | Details |
| USRE30313E | Resistors and compositions therefor | Expired / Lapsed | 1977-12-20 | 1980-06-24 | 41 | Details |
| US4208465A | Clear coat/color coat finish containing an antioxidant and … | Expired / Lapsed | 1978-05-03 | 1980-06-17 | 54 | Details |
| US4206294A | Graft copolymers and coating compositions thereof | Expired / Lapsed | 1978-12-22 | 1980-06-03 | 7 | Details |
| US4205158A | Copolyetherester based on ethylene oxide-capped poly(propyl… | Expired / Lapsed | 1979-03-28 | 1980-05-27 | 9 | Details |
| US4196270A | High solids coating composition adapted for use as automoti… | Expired / Lapsed | 1978-09-22 | 1980-04-01 | 17 | Details |
| US4188469A | Composition of hydrophilic fluoropolymers with fibrous matt… | Expired / Lapsed | 1978-04-11 | 1980-02-12 | 3 | Details |
| US4181784A | High solids coating composition adapted for use as automoti… | Expired / Lapsed | 1978-09-22 | 1980-01-01 | 15 | Details |
| US4181783A | High solids coating composition adapted for use as automoti… | Expired / Lapsed | 1978-09-22 | 1980-01-01 | 21 | Details |
| US4181785A | High solids coating composition adapted for use as automoti… | Expired / Lapsed | 1978-09-22 | 1980-01-01 | 17 | Details |
| US4180614A | Gas-barrier coated films, sheets or foils and method of pre… | Expired / Lapsed | 1977-12-16 | 1979-12-25 | 61 | Details |
| US4178321A | High solids composition with hydroxy functional acrylic _or… | Expired / Lapsed | 1978-12-26 | 1979-12-11 | 12 | Details |
| US4178324A | High solids coating composition with oligomeric hydroxy pho… | Expired / Lapsed | 1978-12-26 | 1979-12-11 | 18 | Details |
| US4178319A | High solids coating composition with oligomeric hydroxyphos… | Expired / Lapsed | 1978-12-26 | 1979-12-11 | 13 | Details |
| US4178323A | High solids coating composition with hydroxy functional acr… | Expired / Lapsed | 1978-12-26 | 1979-12-11 | 13 | Details |
| US4173670A | Composite tubular elements | Expired / Lapsed | 1977-05-27 | 1979-11-06 | 13 | Details |
| US4172859A | Tough thermoplastic polyester compositions | Expired / Lapsed | 1975-05-23 | 1979-10-30 | 36 | Details |
| UST982003I4 | Stabilized copolyetheresters | Expired / Lapsed | 1978-07-28 | 1979-05-01 | 0 | Details |
| US4138426A | Alkyl perfluoro-ω-fluoroformyl esters and monomers therefrom | Expired / Lapsed | 1978-01-11 | 1979-02-06 | 10 | Details |
| US4130675A | Polyarylene sulfide resin coating method | Expired / Lapsed | 1977-11-28 | 1978-12-19 | 4 | Details |
| US4130677A | Process for applying to glass an organic coating having con… | Expired / Lapsed | 1977-10-21 | 1978-12-19 | 13 | Details |
| US4128535A | Method for reducing color formation in polyesters | Expired / Lapsed | 1977-09-19 | 1978-12-05 | 4 | Details |
| US4123401A | Finishes having improved scratch resistance prepared from c… | Expired / Lapsed | 1978-02-02 | 1978-10-31 | 17 | Details |
| US4122226A | Heat-stable polymer coating composition with oxidation cata… | Expired / Lapsed | 1977-03-24 | 1978-10-24 | 18 | Details |
| US4121000A | Coating composition comprising a polysiloxane resin-forming… | Expired / Lapsed | 1978-01-23 | 1978-10-17 | 13 | Details |
| US4115293A | Denture cleanser | Expired / Lapsed | 1977-04-07 | 1978-09-19 | 13 | Details |
| US4107283A | Tracer for circulation determinations | Expired / Lapsed | 1976-07-19 | 1978-08-15 | 49 | Details |
| USRE29725E | Analytical test pack and process for analysis | Expired / Lapsed | 1970-05-07 | 1978-08-08 | 18 | Details |
| US4104438A | Gas-barrier coated films, sheets or foils and method of pre… | Expired / Lapsed | 1975-11-12 | 1978-08-01 | 5 | Details |
| US4100323A | Scrimless filter felt | Expired / Lapsed | 1977-10-07 | 1978-07-11 | 5 | Details |
| US4094965A | Diagnostic agents containing albumin and method for making … | Expired / Lapsed | 1977-04-01 | 1978-06-13 | 36 | Details |
| US4094718A | Process of preparing corrugated paper board with a particul… | Expired / Lapsed | 1975-11-17 | 1978-06-13 | 7 | Details |
| US4085071A | Ion exchange polymer film, consisting of fluorinated polyme… | Expired / Lapsed | 1975-10-20 | 1978-04-18 | 20 | Details |
| US4065432A | Thermally stable, rigid polyesters from aromatic dibasic ac… | Expired / Lapsed | 1976-12-16 | 1977-12-27 | 10 | Details |
| US4059873A | Fluid process for making continuous filament heather yarn | Expired / Lapsed | 1976-11-02 | 1977-11-29 | 11 | Details |
| US4060488A | Particulate membrane ultrafiltration device | Expired / Lapsed | 1975-11-20 | 1977-11-29 | 9 | Details |
| US4055201A | Expansible fabric for fluid dispensing application | Expired / Lapsed | 1976-08-16 | 1977-10-25 | 18 | Details |
| US4054479A | Additive process for producing printed circuit elements usi… | Expired / Lapsed | 1976-12-22 | 1977-10-18 | 18 | Details |
| US4054418A | Catalytic abatement system | Expired / Lapsed | 1975-11-10 | 1977-10-18 | 4 | Details |
| US4052866A | High-recovery force warp knit stretch fabric with lengthwis… | Expired / Lapsed | 1976-09-27 | 1977-10-11 | 6 | Details |
| US4048148A | Polyazomethine fibers and films | Expired / Lapsed | 1976-03-19 | 1977-09-13 | 24 | Details |
| US4042657A | Process for the automatic inspection of blow-molded articles | Expired / Lapsed | 1976-02-20 | 1977-08-16 | 7 | Details |
| US4039713A | Fluorocarbon primer having improved scratch resistance | Expired / Lapsed | 1975-07-31 | 1977-08-02 | 24 | Details |
| US4036802A | Tetrafluoroethylene copolymer fine powder resin | Expired / Lapsed | 1975-09-24 | 1977-07-19 | 25 | Details |
| US4026967A | Process for making grafted polymeric material | Expired / Lapsed | 1976-06-25 | 1977-05-31 | 15 | Details |
| US4018854A | Carboxyphosphonates | Expired / Lapsed | 1975-06-25 | 1977-04-19 | 3 | Details |
| US4015775A | Method of gradient separation | Expired / Lapsed | 1975-07-16 | 1977-04-05 | 4 | Details |
| US4013624A | Branched thermoplastic copolyesters | Expired / Lapsed | 1972-03-20 | 1977-03-22 | 17 | Details |
| US4010222A | Blends of copolyesters and ethylene/carboxylic acid copolym… | Expired / Lapsed | 1975-05-23 | 1977-03-01 | 11 | Details |
| US4005566A | Process and apparatus for imparting coherence to tow | Expired / Lapsed | 1969-03-03 | 1977-02-01 | 19 | Details |
| US4003974A | Continuous spin-drawing process for preparing polyethylene … | Expired / Lapsed | 1975-04-04 | 1977-01-18 | 6 | Details |
| US3997489A | Melt extrudable polyvinyl alcohol compositions | Expired / Lapsed | 1974-11-25 | 1976-12-14 | 11 | Details |
| US3991013A | Copolyesters of derivatives of hydroquinone | Expired / Lapsed | 1975-07-16 | 1976-11-09 | 12 | Details |
| US3984601A | Acrylonitrile polymer filaments | Expired / Lapsed | 1972-10-02 | 1976-10-05 | 9 | Details |
| US3981853A | Polytetrafluoroethylene molding powder from polytetrafluoro… | Expired / Lapsed | 1974-06-17 | 1976-09-21 | 7 | Details |
| US3980611A | Filled thermoplastic films | Expired / Lapsed | 1973-01-18 | 1976-09-14 | 19 | Details |
| US3978341A | Short wavelength ultraviolet irradiation treatment of polym… | Expired / Lapsed | 1974-04-10 | 1976-08-31 | 5 | Details |
| US3976720A | Polyamide/polyolefin plastic graft copolymers | Expired / Lapsed | 1974-11-13 | 1976-08-24 | 17 | Details |
| US3963802A | Blend of ethylene copolymer elastomer and a copolyethereste… | Expired / Lapsed | 1975-06-20 | 1976-06-15 | 11 | Details |
| US3963801A | Blends of copolyesters, ethylene/carboxylic acid copolymers… | Expired / Lapsed | 1975-05-23 | 1976-06-15 | 13 | Details |
| US3959526A | Process for preparing high barrier, heat-sealable packaging… | Expired / Lapsed | 1974-12-20 | 1976-05-25 | 10 | Details |
| US3959062A | Method of joining surfaces using segmented copolyester adhe… | Expired / Lapsed | 1974-06-13 | 1976-05-25 | 18 | Details |
| US3943201A | Alkoxy carboxycarbonylphosphonic acid esters | Expired / Lapsed | 1974-05-30 | 1976-03-09 | 5 | Details |
| US3929943A | Process for sealing thermoplastic tube | Expired / Lapsed | 1974-08-28 | 1975-12-30 | 4 | Details |
| US3905937A | Color concentrates | Expired / Lapsed | 1973-11-09 | 1975-09-16 | 4 | Details |
| US3900689A | Substrates treated with chromium(iii) complexes to increase… | Expired / Lapsed | 1973-06-25 | 1975-08-19 | 34 | Details |
| US3900654A | Composite polymeric electric heating element | Expired / Lapsed | 1972-12-11 | 1975-08-19 | 24 | Details |
| US3896204A | Melt-extrusion of acrylonitrile polymers into filaments | Expired / Lapsed | 1972-10-02 | 1975-07-22 | 11 | Details |
| US3885964A | Photoimaging process using nitroso dimer | Expired / Lapsed | 1974-05-31 | 1975-05-27 | 21 | Details |
| US3886066A | Tannin treatment for non-porous semipermeable membranes | Expired / Lapsed | 1972-11-06 | 1975-05-27 | 20 | Details |
| US3873508A | Preparation of acrylonitrile polymer | Expired / Lapsed | 1973-12-27 | 1975-03-25 | 6 | Details |
| US3869430A | High modulus, high tenacity poly(p-phenylene terephthalamid… | Expired / Lapsed | 1972-06-30 | 1975-03-04 | 4 | Details |
| US3869427A | Treatment of linear polyester with organic monoepoxide | Expired / Lapsed | 1966-11-23 | 1975-03-04 | 11 | Details |
| US3867153A | Photohardenable element | Expired / Lapsed | 1972-09-11 | 1975-02-18 | 9 | Details |
| US3864271A | Stabilized acidic hydrogen peroxide solutions | Expired / Lapsed | 1972-12-04 | 1975-02-04 | 22 | Details |
| US3860468A | Angular welding process and apparatus | Expired / Lapsed | 1973-04-10 | 1975-01-14 | 18 | Details |
| US3856480A | Diamond joined to metal | Expired / Lapsed | 1973-02-16 | 1974-12-24 | 6 | Details |
| US3852226A | Melt-condensed polyamide interpolymers | Expired / Lapsed | 1973-04-19 | 1974-12-03 | 10 | Details |
| US3848773A | Radioactive gas dispensing device | Expired / Lapsed | 1972-03-07 | 1974-11-19 | 20 | Details |
| US3843890A | Optical-electrical web inspection system | Expired / Lapsed | 1973-07-27 | 1974-10-22 | 10 | Details |
| US3832830A | Permeation separation device | Expired / Lapsed | 1972-09-18 | 1974-09-03 | 17 | Details |
| US3822723A | Apparatus for controlling addition of replenishment solutio… | Expired / Lapsed | 1973-05-10 | 1974-07-09 | 20 | Details |
| US3821051A | Process for bonding rib structures of thermoplastic resin | Expired / Lapsed | 1970-12-16 | 1974-06-28 | 6 | Details |
| US3815602A | Disposable diaper | Expired / Lapsed | 1969-12-31 | 1974-06-11 | 1 | Details |
| US3808303A | Ether treatment of nitrogen-containing polymer membranes | Expired / Lapsed | 1971-12-30 | 1974-04-30 | 0 | Details |
| US3804802A | Thermoplastic composites with low alkali glass fillers | Expired / Lapsed | 1972-01-27 | 1974-04-16 | 0 | Details |
| US3804423A | Shaft seal throttle bushing | Expired / Lapsed | 1971-11-16 | 1974-04-16 | 7 | Details |
| US3801401A | Apparatus for making convolute wound structures | Expired / Lapsed | 1971-09-24 | 1974-04-02 | 32 | Details |
| US3799164A | Analgesic apparatus | Expired / Lapsed | 1971-08-12 | 1974-03-26 | 12 | Details |
| US3800008A | Oriented polymer strap | Expired / Lapsed | 1971-08-05 | 1974-03-26 | 2 | Details |
| US3793262A | Alternating copolymers of ethylene/alkyl acrylates and a pr… | Expired / Lapsed | 1972-02-29 | 1974-02-19 | 0 | Details |
| US3788950A | Enzyme gel and use therefor | Expired / Lapsed | 1970-08-05 | 1974-01-29 | 0 | Details |
| US3787326A | Chromium (iii) compositions and their preparation | Expired / Lapsed | 1971-12-22 | 1974-01-22 | 42 | Details |
| US3786127A | Stretching polyethylene terephthalate film in a shortened s… | Expired / Lapsed | 1971-01-28 | 1974-01-15 | 0 | Details |
| US3785771A | Method and apparatus for analyzing a liquid containing macr… | Expired / Lapsed | 1969-08-19 | 1974-01-15 | 11 | Details |
| US3784520A | Segmented thermoplastic copolyesters | Expired / Lapsed | 1972-01-26 | 1974-01-08 | 0 | Details |
| US3784399A | Films of fluorinated polymer containing sulfonyl groups wit… | Expired / Lapsed | 1971-09-08 | 1974-01-08 | 16 | Details |
| US3772872A | Polyester yarn for draw-texturing process | Expired / Lapsed | 1973-03-27 | 1973-11-20 | 4 | Details |
| US3773449A | Apparatus for producing continuous round jacketed lightguid… | Expired / Lapsed | 1971-09-29 | 1973-11-20 | 3 | Details |
| US3773919A | Polylactide-drug mixtures | Expired / Lapsed | 1970-10-08 | 1973-11-20 | 0 | Details |
| US3770155A | Dually sealable, non-leaking vial for shipping radioactive … | Expired / Lapsed | 1971-10-19 | 1973-11-06 | 7 | Details |
| US3770382A | Automatic clinical analyzer | Expired / Lapsed | 1971-07-15 | 1973-11-06 | 6 | Details |
| US3767756A | Dry jet wet spinning process | Expired / Lapsed | 1972-06-30 | 1973-10-23 | 0 | Details |
| US3766146A | Segmented thermoplastic copolyester elastomers | Expired / Lapsed | 1971-03-18 | 1973-10-16 | 0 | Details |
| US3763109A | Segmented thermoplastic copolyesters | Expired / Lapsed | 1971-08-19 | 1973-10-02 | 0 | Details |
| US3762936A | Manufacture of borosilicate glass powder essentially free o… | Expired / Lapsed | 1971-02-02 | 1973-10-02 | 4 | Details |
| US3758633A | Crosslinking agents and flow control agents powdered coatin… | Expired / Lapsed | 1971-08-16 | 1973-09-11 | 3 | Details |
| US3752790A | Chlorinated toluenediamine curing agents for use in prepari… | Expired / Lapsed | 1971-05-19 | 1973-08-14 | 0 | Details |
| US3745150A | Amorphous polyethylene terephthalate container and process … | Expired / Lapsed | 1971-03-26 | 1973-07-10 | 0 | Details |
| US3740375A | Cross-linkable chlorinated aromatic polymers | Expired / Lapsed | 1971-07-01 | 1973-06-19 | 0 | Details |
| US3737520A | Salt-gel process for the manufacture of fibrous alkali meta… | Expired / Lapsed | 1972-04-06 | 1973-06-05 | 0 | Details |
| US3736311A | Process for improving the thermal stability of polyvinyl al… | Expired / Lapsed | 1972-03-02 | 1973-05-29 | 0 | Details |
| US3732684A | Product and process | Expired / Lapsed | 1971-02-23 | 1973-05-15 | 8 | Details |
| US3733309A | Biaxially oriented poly(ethylene terephthalate)bottle | Expired / Lapsed | 1970-11-30 | 1973-05-15 | 0 | Details |
| US3723569A | Blends of copolyesters with cured epoxy resins | Expired / Lapsed | 1972-03-20 | 1973-03-27 | 15 | Details |
| US3712929A | 1-perfluoroalkyl-1,2,2-triphenylethylenes | Expired / Lapsed | 1969-10-31 | 1973-01-23 | 0 | Details |
| US3711550A | Isomerization of 4,4'-methylenedi (cyclohexylamine) over mo… | Expired / Lapsed | 1970-02-16 | 1973-01-16 | 0 | Details |
| US3707516A | Coating composition of an acrylic-epoxy graft copolymer | Expired / Lapsed | 1971-04-28 | 1972-12-26 | 0 | Details |
| US3703751A | Yarn treating jet | Expired / Lapsed | 1971-07-27 | 1972-11-28 | 2 | Details |
| US3702658A | Permeation separation apparatus | Expired / Lapsed | 1971-02-24 | 1972-11-14 | 0 | Details |
| US3702267A | Electrochemical cell containing a water-wettable polytetraf… | Expired / Lapsed | 1970-06-15 | 1972-11-07 | 0 | Details |
| US3696206A | Audio dosimeter | Expired / Lapsed | 1970-11-27 | 1972-10-03 | 3 | Details |
| US3692569A | Surface-activated fluorocarbon objects | Expired / Lapsed | 1970-02-12 | 1972-09-19 | 0 | Details |
| US3690465A | Permeation separation element | Expired / Lapsed | 1970-10-15 | 1972-09-12 | 6 | Details |
| US3689608A | Process for forming a nonwoven web | Expired / Lapsed | 1970-06-10 | 1972-09-05 | 4 | Details |
| US3684572A | Electroless nickel plating process for nonconductors | Expired / Lapsed | 1970-07-13 | 1972-08-15 | 0 | Details |
| US3682767A | Ethylene copolymer blend for liquid packaging film | Expired / Lapsed | 1970-10-02 | 1972-08-08 | 0 | Details |
| US3683160A | A method and apparatus for monitoring and predicting the le… | Expired / Lapsed | 1970-03-24 | 1972-08-08 | 21 | Details |
| US3679447A | Tetravinyl-vinyl monomer paint composition and painting pro… | Expired / Lapsed | 1969-08-04 | 1972-07-25 | 0 | Details |
| US3671542A | Optically anisotropic aromatic polyamide dopes | Expired / Lapsed | 1969-05-23 | 1972-06-20 | 1 | Details |
| US3669695A | Titanium and/or zirconium nitride based articles of jewelry | Expired / Lapsed | 1969-11-21 | 1972-06-13 | 0 | Details |
| US3668028A | Method of making printing masks with high energy beams | Expired / Lapsed | 1970-06-10 | 1972-06-06 | 0 | Details |
| US3663318A | Process for making ferromagnetic metal powders | Expired / Lapsed | 1970-10-05 | 1972-05-16 | 11 | Details |
| US3662440A | Process for controlling yarn tension and threadline stabili… | Expired / Lapsed | 1970-08-17 | 1972-05-16 | 11 | Details |
| US3663266A | Moisture responsive synthetic microporous sheet material | Expired / Lapsed | 1970-05-21 | 1972-05-16 | 12 | Details |
| US3661831A | Tetrafluoroethylene/hexafluoropropylene copolymer particles… | Expired / Lapsed | 1970-07-01 | 1972-05-09 | 0 | Details |
| US3661588A | Photopolymerizable compositions containing aminophenyl keto… | Expired / Lapsed | 1969-11-18 | 1972-05-09 | 12 | Details |
| US3660281A | Permeation separation membranes | Expired / Lapsed | 1970-05-06 | 1972-05-02 | 0 | Details |
| FR2104349A5 | FR2104349A5 - - Google Patents | Expired / Lapsed | 1971-08-13 | 1972-04-14 | 0 | Details |
| US3652304A | Nitride-oxide refractories | Expired / Lapsed | 1969-11-21 | 1972-03-28 | 6 | Details |
| US3650601A | Magneto-optic device having alternate layer film structure | Expired / Lapsed | 1970-11-19 | 1972-03-21 | 5 | Details |
| US3651014A | Segmented thermoplastic copolyester elastomers | Expired / Lapsed | 1970-06-22 | 1972-03-21 | 0 | Details |
| US3645989A | Fluorinated oil- and water-repellent and dry soil resistant… | Expired / Lapsed | 1970-01-29 | 1972-02-29 | 0 | Details |
| US3638291A | Yarn-treating jet | Expired / Lapsed | 1970-10-01 | 1972-02-01 | 10 | Details |
| US3639123A | Double-transfer process for photohardenable images | Expired / Lapsed | 1969-10-13 | 1972-02-01 | 8 | Details |
| US3635631A | Continuous molding of thermoplastic resin | Expired / Lapsed | 1970-06-10 | 1972-01-18 | 10 | Details |
| US3630947A | Europium strontium chloride phosphate fluorescent compositi… | Expired / Lapsed | 1969-10-17 | 1971-12-28 | 0 | Details |
| US3616928A | Permeation separation device for separating fluids | Expired / Lapsed | 1969-10-02 | 1971-11-02 | 2 | Details |
| US3617702A | Apparatus and method for perforating sheet material | Expired / Lapsed | 1969-06-10 | 1971-11-02 | 53 | Details |
| US3615435A | Photohardenable image reproduction element with integral pi… | Expired / Lapsed | 1968-11-12 | 1971-10-26 | 21 | Details |
| US3611698A | Heavy denier crimped and entangled yarn | Expired / Lapsed | 1970-03-04 | 1971-10-12 | 0 | Details |
| US3607828A | Ultra violet stabilized polyolefins | Expired / Lapsed | 1970-02-01 | 1971-09-21 | 7 | Details |
| US3607818A | Opaque polyester film | Expired / Lapsed | 1968-07-23 | 1971-09-21 | 14 | Details |
| US3605427A | Method and apparatus for extracting heat from articles with… | Expired / Lapsed | 1969-12-10 | 1971-09-20 | 0 | Details |
| US3604331A | Machine for developing resist images | Expired / Lapsed | 1967-07-26 | 1971-09-14 | 1 | Details |
| US3600490A | Process of forming a ripple-free structure from a polymeriz… | Expired / Lapsed | 1969-07-23 | 1971-08-17 | 0 | Details |
| US3597248A | Novel guanidine silicates,compositions and uses | Expired / Lapsed | 1969-08-06 | 1971-08-03 | 0 | Details |
| US3595740A | Hydrolyzed ethylene/vinyl acetate copolymer as oxygen barri… | Expired / Lapsed | 1968-05-08 | 1971-07-27 | 0 | Details |
| US3595952A | Steam conditioning of polyamide filament | Expired / Lapsed | 1968-04-05 | 1971-07-27 | 0 | Details |
| US3593074A | Apparatus and process | Expired / Lapsed | 1969-12-22 | 1971-07-13 | 4 | Details |
| US3581343A | Tubing die extrausion coating apparatus | Expired / Lapsed | 1968-10-25 | 1971-06-01 | 0 | Details |
| US3579370A | Composite layered tetrahaloethylene structure | Expired / Lapsed | 1969-10-01 | 1971-05-18 | 0 | Details |
| US3578481A | Suede-like sheet material of styrene/butadiene polymer cont… | Expired / Lapsed | 1968-06-18 | 1971-05-11 | 0 | Details |
| US3577614A | Yarn-texturing jet device | Expired / Lapsed | 1969-11-10 | 1971-05-04 | 5 | Details |
| US3573476A | Apparatus for determining reflective color index of fibrous… | Expired / Lapsed | 1968-11-20 | 1971-04-06 | 9 | Details |
| US3567632A | Permselective,aromatic,nitrogen-containing polymeric membra… | Expired / Lapsed | 1969-08-08 | 1971-03-02 | 0 | Details |
| US3565643A | Alumina - metalline compositions bonded with aluminide and … | Expired / Lapsed | 1969-03-03 | 1971-02-23 | 0 | Details |
| US3565979A | Flash spinning | Expired / Lapsed | 1968-09-18 | 1971-02-23 | 0 | Details |
| US3565780A | Process for the preparation of graft copolymers using repet… | Expired / Lapsed | 1966-09-12 | 1971-02-23 | 0 | Details |
| US3562973A | Collapsible prefabricated structure | Expired / Lapsed | 1969-02-14 | 1971-02-16 | 0 | Details |
| US3563892A | Textile-treating composition and process | Expired / Lapsed | 1967-06-12 | 1971-02-16 | 0 | Details |
| US3561932A | Indium generator | Expired / Lapsed | 1967-01-26 | 1971-02-09 | 0 | Details |
| US3560425A | Particulate blend of polyacrylonitrile and a latent solvent | Expired / Lapsed | 1967-12-22 | 1971-02-02 | 0 | Details |
| US3554379A | Desalination apparatus and process of manufacture using imp… | Expired / Lapsed | 1969-06-10 | 1971-01-12 | 22 | Details |
| US3553109A | Resistor compositions containing pyrochlore-related oxides … | Expired / Lapsed | 1969-10-24 | 1971-01-05 | 0 | Details |
| US3553331A | Pharmaceutical compositions and methods utilizing 4-alkyl-1… | Expired / Lapsed | 1969-02-28 | 1971-01-05 | 0 | Details |
| US3552973A | Light sensitive hexaarylbiimidazole/p- aminophenyl ketone c… | Expired / Lapsed | 1967-07-20 | 1971-01-05 | 0 | Details |
| US3549733A | Method of producing polymeric printing plates | Expired / Lapsed | 1968-12-04 | 1970-12-22 | 0 | Details |
| US3547856A | Fluorinated oil and water repellents | Expired / Lapsed | 1969-03-11 | 1970-12-15 | 0 | Details |
| US3547894A | Fluorinated polyurethanes | Expired / Lapsed | 1969-02-28 | 1970-12-15 | 0 | Details |
| US3542028A | Flushable sanitary napkins | Expired / Lapsed | 1968-06-19 | 1970-11-24 | 0 | Details |
| US3541069A | Preparation of highly alcoholyzed polyvinyl alcohol | Expired / Lapsed | 1968-04-29 | 1970-11-17 | 0 | Details |
| US3532741A | Amino,monomethylamino and dimethylamino derivatives of deca… | Expired / Lapsed | 1964-05-27 | 1970-10-06 | 0 | Details |
| US3528553A | Permeation separation device for separating fluids | Expired / Lapsed | 1968-11-26 | 1970-09-15 | 0 | Details |
| US3526001A | Permeation separation device for separating fluids and proc… | Expired / Lapsed | 1968-11-26 | 1970-08-25 | 0 | Details |
| US3524546A | Permeation separation with acidgrafted nylon membranes | Expired / Lapsed | 1967-10-11 | 1970-08-18 | 0 | Details |
| US3524221A | Apparatus for monitoring polymer viscosity in a spinning un… | Expired / Lapsed | 1967-09-13 | 1970-08-18 | 0 | Details |
| US3523938A | Starch plasma expanders and process of preparation | Expired / Lapsed | 1967-12-13 | 1970-08-11 | 0 | Details |
| US3522070A | Aqueous coating compositions containing dispersed submicron… | Expired / Lapsed | 1966-06-01 | 1970-07-28 | 0 | Details |
| US3520846A | Polyethylene terephthalate film containing cobaltous alumin… | Expired / Lapsed | 1966-11-01 | 1970-07-21 | 2 | Details |
| US3516967A | Polyiminoimide and polyamide nitrile compositions | Expired / Lapsed | 1968-10-28 | 1970-06-23 | 0 | Details |
| US3515557A | Photographic color film and process of making same | Expired / Lapsed | 1965-04-12 | 1970-06-02 | 0 | Details |
| US3507683A | Method for applying heat-sealable polyamic acid,polyamide-i… | Expired / Lapsed | 1967-06-22 | 1970-04-21 | 0 | Details |
| US3504016A | Fluorinated polyesters | Expired / Lapsed | 1969-02-28 | 1970-03-31 | 0 | Details |
| US3503515A | Permeation separatory apparatus | Expired / Lapsed | 1968-10-03 | 1970-03-31 | 0 | Details |
| US3496102A | Chromatographic analysis method | Expired / Lapsed | 1967-11-13 | 1970-02-17 | 0 | Details |
| US3492151A | Metallizing process | Expired / Lapsed | 1966-04-06 | 1970-01-27 | 0 | Details |
| US3492250A | Closed cell foam | Expired / Lapsed | 1963-05-21 | 1970-01-27 | 0 | Details |
| US3490115A | Apparatus for collecting charged fibrous material in sheet … | Expired / Lapsed | 1967-04-06 | 1970-01-20 | 0 | Details |
| US3488273A | Electrodeposition method for design coating | Expired / Lapsed | 1967-06-02 | 1970-01-06 | 0 | Details |
| US3487628A | Core-spun yarns,fabrics and process for the preparation the… | Expired / Lapsed | 1966-09-30 | 1970-01-06 | 0 | Details |
| US3488252A | Coated aluminum foil paper laminate | Expired / Lapsed | 1964-09-02 | 1970-01-06 | 0 | Details |
| US3487059A | Production of polymeric alcohols by the thermal decarbonyla… | Expired / Lapsed | 1967-11-29 | 1969-12-30 | 0 | Details |
| US3487049A | Process for producing polyethylene terephthalate | Expired / Lapsed | 1967-01-04 | 1969-12-30 | 0 | Details |
| US3485706A | Textile-like patterned nonwoven fabrics and their production | Expired / Lapsed | 1968-01-18 | 1969-12-23 | 0 | Details |
| US3485708A | Patterned nonwoven fabric of multifilament yarns and jet st… | Expired / Lapsed | 1968-01-18 | 1969-12-23 | 0 | Details |
| US3485709A | Acrylic nonwoven fabric of high absorbency | Expired / Lapsed | 1966-05-16 | 1969-12-23 | 0 | Details |
| US3481888A | Process for gelling aqueous polyvinyl alcohol solutions | Expired / Lapsed | 1965-10-01 | 1969-12-02 | 0 | Details |
| US3475204A | Polyester tire cord lubricant | Expired / Lapsed | 1967-09-18 | 1969-10-28 | 0 | Details |
| US3473938A | Process for making high strength refractory structures | Expired / Lapsed | 1968-04-05 | 1969-10-21 | 0 | Details |
| US3473382A | Base line slope compensating circuit | Expired / Lapsed | 1967-01-10 | 1969-10-21 | 0 | Details |
| US3472828A | Process for preparing fluid chloroprene polymers in the pre… | Expired / Lapsed | 1967-06-16 | 1969-10-14 | 0 | Details |
| US3469001A | Process for making polyester cord for no-reset v-belts | Expired / Lapsed | 1965-10-08 | 1969-09-23 | 0 | Details |
| US3467142A | Flow device and method of manufacture thereof | Expired / Lapsed | 1967-08-08 | 1969-09-16 | 0 | Details |
| US3465589A | Apparatus for measuring yarn temperature | Expired / Lapsed | 1966-07-15 | 1969-09-09 | 0 | Details |
| US3461261A | Heating apparatus | Expired / Lapsed | 1966-10-31 | 1969-08-12 | 0 | Details |
| US3461199A | Process for improving dimensional stability of tensilized p… | Expired / Lapsed | 1966-05-03 | 1969-08-12 | 0 | Details |
| US3460982A | Biaxially oriented polyester film base having a sublayer of… | Expired / Lapsed | 1966-01-03 | 1969-08-12 | 0 | Details |
| US3459696A | Water-repellent compositions | Expired / Lapsed | 1968-08-01 | 1969-08-05 | 0 | Details |
| US3458615A | Hydrodynamically centering sheath/core filament spinnerette | Expired / Lapsed | 1967-04-18 | 1969-07-29 | 0 | Details |
| US3457051A | Metallic refractory compositions | Expired / Lapsed | 1965-10-01 | 1969-07-22 | 0 | Details |
| US3455727A | Synthetic microporous polymeric sheet material coated with … | Expired / Lapsed | 1966-05-31 | 1969-07-15 | 0 | Details |
| US3452132A | Process of steam drawing and annealing polyester yarn | Expired / Lapsed | 1966-11-03 | 1969-06-24 | 0 | Details |
| US3451820A | Dispersions of lipophilic colorcoupling copolymers | Expired / Lapsed | 1965-12-01 | 1969-06-24 | 0 | Details |
| US3449305A | Interpolymers of vinylidene fluoride | Expired / Lapsed | 1966-03-01 | 1969-06-10 | 0 | Details |
| US3443292A | Apparatus for interlacing multi-filament yarn | Expired / Lapsed | 1968-05-31 | 1969-05-13 | 0 | Details |
| US3442002A | Method of manufacture of fluid separation apparatus | Expired / Lapsed | 1965-12-22 | 1969-05-06 | 0 | Details |
| US3441538A | Boron trifluoride - hydrogen fluoride catalyzed synthesis o… | Expired / Lapsed | 1967-07-17 | 1969-04-29 | 0 | Details |
| US3437892A | Capacitor dielectric compositions and capacitors made there… | Expired / Lapsed | 1966-12-05 | 1969-04-08 | 0 | Details |
| US3437432A | Single crystals | Expired / Lapsed | 1966-07-21 | 1969-04-08 | 0 | Details |
| US3436372A | Polyamide-acid and polyimide polymers crosslinked with sele… | Expired / Lapsed | 1966-05-02 | 1969-04-01 | 0 | Details |
| US3433008A | Bulked yarn | Expired / Lapsed | 1965-11-19 | 1969-03-18 | 0 | Details |
| US3429856A | Polyurethanes cured with 4,4'-methylene-bis-(o-trifluoromet… | Expired / Lapsed | 1967-07-21 | 1969-02-25 | 0 | Details |
| US3427462A | Defect detector which simultaneously views a large and smal… | Expired / Lapsed | 1966-08-05 | 1969-02-11 | 0 | Details |
| US3425973A | Coating composition based on aromatic diisocyanates,polyols… | Expired / Lapsed | 1963-08-09 | 1969-02-04 | 0 | Details |
| US3423809A | Process for forming differential shrinkage bulked yarn | Expired / Lapsed | 1967-11-15 | 1969-01-28 | 0 | Details |
| US3424835A | Propiolactone-pivalolactone copolyesters | Expired / Lapsed | 1964-04-20 | 1969-01-28 | 2 | Details |
| US3418393A | Block copolymers of polypivalolactone and carboxyl group co… | Expired / Lapsed | 1966-05-19 | 1968-12-24 | 0 | Details |
| US3418260A | Imidazole-borane polymers | Expired / Lapsed | 1966-01-20 | 1968-12-24 | 0 | Details |
| US3417413A | Pillow with fiber-on-end pile covering aiding prevention of… | Expired / Lapsed | 1965-12-22 | 1968-12-24 | 0 | Details |
| US3418118A | Photographic processes and products | Expired / Lapsed | 1965-10-22 | 1968-12-24 | 2 | Details |
| US3418242A | Refrigerant composition | Expired / Lapsed | 1965-05-18 | 1968-12-24 | 0 | Details |
| US3412547A | Elastic composite yarn and preparation thereof | Expired / Lapsed | 1966-06-27 | 1968-11-26 | 0 | Details |
| US3410461A | Spherical aerosol valve | Expired / Lapsed | 1966-05-31 | 1968-11-12 | 0 | Details |
| US3409419A | Nitrides plus wear-resistant additives bonded with iron, co… | Expired / Lapsed | 1966-11-09 | 1968-11-05 | 0 | Details |
| US3407156A | Weatherable transparent coating composition for wood substr… | Expired / Lapsed | 1964-06-03 | 1968-10-22 | 2 | Details |
| CA796181A | Plastic tube heat exchanger and process of making | Expired / Lapsed | — | 1968-10-08 | 0 | Details |
| US3404710A | Plain-weave unidirectional stretch fabric | Expired / Lapsed | 1966-07-14 | 1968-10-08 | 0 | Details |
| US3400206A | Consumable electrode stabilized against warping, formed fro… | Expired / Lapsed | 1965-04-09 | 1968-09-03 | 0 | Details |
| US3398016A | Coating and drying thermally sensitive thermoplastic film | Expired / Lapsed | 1964-07-10 | 1968-08-20 | 0 | Details |
| US3397154A | Preparation of alumina-supported catalyst compositions and … | Expired / Lapsed | 1963-07-09 | 1968-08-13 | 4 | Details |
| US3394587A | Web tension indicator | Expired / Lapsed | 1966-03-09 | 1968-07-30 | 0 | Details |
| US3394985A | Graft polymerization reaction of polyamide filaments and ac… | Expired / Lapsed | 1965-09-02 | 1968-07-30 | 0 | Details |
| US3395014A | Preparation of printing plates by heat plus a pressure grad… | Expired / Lapsed | 1963-06-07 | 1968-07-30 | 5 | Details |
| US3389549A | Aromatic dicarbonyl sulfonate modified polycarbonamides | Expired / Lapsed | 1966-01-17 | 1968-06-25 | 0 | Details |
| US3389265A | Colorimeter for measuring the tristimulus coefficients of c… | Expired / Lapsed | 1965-05-03 | 1968-06-18 | 2 | Details |
| US3387997A | Vinylidene chloride-acrylate-acrylic acid copolymer, wax-co… | Expired / Lapsed | 1965-03-23 | 1968-06-11 | 4 | Details |
| US3387326A | Apparatus for charging and spreading a web | Expired / Lapsed | 1964-06-04 | 1968-06-11 | 0 | Details |
| US3384531A | Flattened ultra-microcellular structure and method for maki… | Expired / Lapsed | 1963-11-27 | 1968-05-21 | 0 | Details |
| US3383239A | Air impingement apparatus and process to control edge flow … | Expired / Lapsed | 1964-04-01 | 1968-05-14 | 0 | Details |
| US3382206A | Pencil receptive film | Expired / Lapsed | 1965-09-03 | 1968-05-07 | 0 | Details |
| US3382305A | Process for preparing oriented microfibers | Expired / Lapsed | 1954-10-29 | 1968-05-07 | 4 | Details |
| US3380876A | Bonding thermoplastic materials to substrates with colloida… | Expired / Lapsed | 1967-06-20 | 1968-04-30 | 0 | Details |
| US3380244A | Core-spun elastic yarn product and process | Expired / Lapsed | 1966-02-01 | 1968-04-30 | 0 | Details |
| US3380831A | Photopolymerizable compositions and elements | Expired / Lapsed | 1964-05-26 | 1968-04-30 | 0 | Details |
| US3378744A | Slip detection circuit | Expired / Lapsed | 1965-10-19 | 1968-04-16 | 0 | Details |
| US3378609A | Oil- and water-repellent compositions | Expired / Lapsed | 1963-06-19 | 1968-04-16 | 0 | Details |
| US3375347A | Heater control circuit | Expired / Lapsed | 1965-06-10 | 1968-03-26 | 0 | Details |
| US3371191A | Electric heater control circuit | Expired / Lapsed | 1966-09-12 | 1968-02-27 | 0 | Details |
| US3369959A | Laminate of polyvinyl fluoride | Expired / Lapsed | 1963-10-25 | 1968-02-20 | 1 | Details |
| US3366494A | Pressurized aerosol food emulsions | Expired / Lapsed | 1967-02-15 | 1968-01-30 | 0 | Details |
| US3365872A | Yarn wrapped with surface fibers locked in place by core el… | Expired / Lapsed | 1964-09-17 | 1968-01-30 | 2 | Details |
| US3364538A | Apparatus for forming nonwoven webs | Expired / Lapsed | 1966-05-31 | 1968-01-23 | 2 | Details |
| US3365425A | Random linear copolyesters of asymmetrically substituted ph… | Expired / Lapsed | 1965-04-12 | 1968-01-23 | 0 | Details |
| US3359879A | Vacuum frame utilizing air inbleed during exposure of photo… | Expired / Lapsed | 1965-04-13 | 1967-12-26 | 2 | Details |
| US3359525A | Electric heating element | Expired / Lapsed | 1964-10-14 | 1967-12-19 | 2 | Details |
| US3356542A | Cobalt-nickel base alloys containing chromium and molybdenum | Expired / Lapsed | 1967-04-10 | 1967-12-05 | 1 | Details |
| US3356760A | Resinous material containing an aromatic polyimide, a fluor… | Expired / Lapsed | 1967-03-16 | 1967-12-05 | 2 | Details |
| US3355982A | Apparatus for simulating daylight and artifical light | Expired / Lapsed | 1963-10-02 | 1967-12-05 | 0 | Details |
| US3353344A | Fluid jet twister | Expired / Lapsed | 1964-10-13 | 1967-11-21 | 2 | Details |
| US3347799A | Gold-palladium conductor compositions and conductors made t… | Expired / Lapsed | 1964-07-16 | 1967-10-17 | 2 | Details |
| US3347818A | Methyl methacrylate compositions containing halogen substit… | Expired / Lapsed | 1962-11-30 | 1967-10-17 | 2 | Details |
| US3344064A | Fluorocarbon-modified polyurethane elastomeric compositions | Expired / Lapsed | 1963-07-19 | 1967-09-26 | 2 | Details |
| US3342774A | Direct preparation of aromatic polyimides | Expired / Lapsed | 1964-01-20 | 1967-09-19 | 2 | Details |
| US3341394A | Sheets of randomly distributed continuous filaments | Expired / Lapsed | 1966-12-21 | 1967-09-12 | 2 | Details |
| US3339341A | Fluid separation process and apparatus | Expired / Lapsed | 1965-12-22 | 1967-09-05 | 1 | Details |
| US3340222A | Hydrofluorocarbon polymer filmforming composition | Expired / Lapsed | 1963-06-28 | 1967-09-05 | 2 | Details |
| US3338985A | Graft copolymers of epoxyethylene groups of polyamide or po… | Expired / Lapsed | 1966-11-14 | 1967-08-29 | 2 | Details |
| US3337644A | Selected fluorinated glycols | Expired / Lapsed | 1965-12-14 | 1967-08-22 | 3 | Details |
| US3331660A | Process for producing a fibrous titanium dioxide containing… | Expired / Lapsed | 1964-05-20 | 1967-07-18 | 2 | Details |
| US3326677A | Process of dispersion-hardening of iron-group base metals | Expired / Lapsed | 1966-05-12 | 1967-06-20 | 2 | Details |
| US3325324A | Process for preparing bonded biaxially compressed fibrous b… | Expired / Lapsed | 1964-11-10 | 1967-06-13 | 2 | Details |
| US3325342A | Crystalline polyalkylene isophthalamide filaments with voids | Expired / Lapsed | 1963-03-19 | 1967-06-13 | 2 | Details |
| US3319515A | Interferometric optical phase discrimination apparatus | Expired / Lapsed | 1963-08-27 | 1967-05-16 | 2 | Details |
| US3320116A | Benzophenone and acetophenone stabilized polymers | Expired / Lapsed | 1963-06-12 | 1967-05-16 | 2 | Details |
| US3318856A | Process of gelling polyvinyl alcohol | Expired / Lapsed | 1964-04-03 | 1967-05-09 | 2 | Details |
| US3317285A | Composition comprising iron-group metal and particulate ref… | Expired / Lapsed | 1965-01-12 | 1967-05-02 | 2 | Details |
| US3316212A | Aromatic polyamide-amides | Expired / Lapsed | 1963-11-21 | 1967-04-25 | 2 | Details |
| US3315328A | Process for preparing fabrics | Expired / Lapsed | 1963-08-05 | 1967-04-25 | 2 | Details |
| US3314845A | Method of flocking and subsequently developing latently cri… | Expired / Lapsed | 1964-07-23 | 1967-04-18 | 2 | Details |
| US3310400A | Process of making metal powder compositions wherein some me… | Expired / Lapsed | 1964-06-22 | 1967-03-21 | 2 | Details |
| US3309330A | Coated particles of vinylidene chloride copolymers | Expired / Lapsed | 1964-12-28 | 1967-03-14 | 2 | Details |
| US3306745A | Photopolymerizable compositions, elements and processes | Expired / Lapsed | 1963-08-19 | 1967-02-28 | 2 | Details |
| US3302239A | Die | Expired / Lapsed | 1963-05-24 | 1967-02-07 | 2 | Details |
| US3303169A | High-modulus, high-tenacity, lowshrinkage polyamide yarn | Expired / Lapsed | 1962-01-18 | 1967-02-07 | 2 | Details |
| US3299171A | Fibers of modified polypivalolactone | Expired / Lapsed | 1964-04-20 | 1967-01-17 | 2 | Details |
| US3299176A | Compatible blends of 1-olefins | Expired / Lapsed | 1963-06-24 | 1967-01-17 | 2 | Details |
| US3296679A | Fluid nozzle | Expired / Lapsed | 1963-11-27 | 1967-01-10 | 2 | Details |
| US3295166A | Apparatus for extruding polytetrafluoroethylene tubing and … | Expired / Lapsed | 1963-07-24 | 1967-01-03 | 2 | Details |
| US3296002A | Refractory shapes | Expired / Lapsed | 1963-07-11 | 1967-01-03 | 2 | Details |
| US3296011A | Surface treatment of perfluorocarbon polymer structures | Expired / Lapsed | 1963-05-24 | 1967-01-03 | 2 | Details |
| US3284331A | Adherability treatment of thermo-plastic film | Expired / Lapsed | 1965-06-10 | 1966-11-08 | 2 | Details |
| US3284392A | Adhesive solution comprising a phenol-formaldehyde resin an… | Expired / Lapsed | 1964-08-28 | 1966-11-08 | 2 | Details |
| US3282905A | Fluorine containing esters and polymers thereof | Expired / Lapsed | 1965-02-09 | 1966-11-01 | 1 | Details |
| US3282875A | Fluorocarbon vinyl ether polymers | Expired / Lapsed | 1964-07-22 | 1966-11-01 | 6 | Details |
| US3282771A | Polyvinyl chloride film adhered to a self-bonded web of con… | Expired / Lapsed | 1962-12-17 | 1966-11-01 | 0 | Details |
| US3279163A | Pill-resistant yarns | Expired / Lapsed | 1964-01-06 | 1966-10-18 | 2 | Details |
| US3277526A | Flash spinning apparatus | Expired / Lapsed | 1964-06-01 | 1966-10-11 | 2 | Details |
| US3278639A | Process for grafting unsaturated monomers onto polyamides | Expired / Lapsed | 1963-03-18 | 1966-10-11 | 2 | Details |
| US3277419A | Laminated heating unit | Expired / Lapsed | 1963-11-20 | 1966-10-04 | 2 | Details |
| US3276944A | Non-woven sheet of synthetic organic polymeric filaments an… | Expired / Lapsed | 1963-08-30 | 1966-10-04 | 2 | Details |
| US3276948A | Product and method of adhering alpha-olefin copolymers to f… | Expired / Lapsed | 1963-07-01 | 1966-10-04 | 1 | Details |
| US3275988A | Programmed batch sequence controller | Expired / Lapsed | 1961-08-21 | 1966-09-27 | 2 | Details |
| US3274295A | Block copolymers of vinylidene compounds and perfluorinated… | Expired / Lapsed | 1965-10-13 | 1966-09-20 | 2 | Details |
| US3274089A | Surface treatment of polymeric shaped structures | Expired / Lapsed | 1963-10-21 | 1966-09-20 | 2 | Details |
| US3274088A | Surface treatment of polymeric shaped structures | Expired / Lapsed | 1961-07-27 | 1966-09-20 | 2 | Details |
| US3272898A | Process for producing a nonwoven web | Expired / Lapsed | 1965-06-11 | 1966-09-13 | 2 | Details |
| US3271943A | Process for stabilizing bulked yarns and product thereof | Expired / Lapsed | 1963-12-30 | 1966-09-13 | 2 | Details |
| US3266969A | Tufting process and products having tufted structures | Expired / Lapsed | 1962-09-10 | 1966-08-16 | 2 | Details |
| US3265762A | Segmented linear copolyesters of 2, 5-disubstituted terepht… | Expired / Lapsed | 1962-10-24 | 1966-08-09 | 2 | Details |
| US3264272A | Ionic hydrocarbon polymers | Expired / Lapsed | 1963-04-08 | 1966-08-02 | 2 | Details |
| US3264612A | Sequence controller | Expired / Lapsed | 1961-08-21 | 1966-08-02 | 2 | Details |
| US3261797A | Process for iminating polymeric latices | Expired / Lapsed | 1964-10-28 | 1966-07-19 | 2 | Details |
| US3261088A | Process for explosively bonding metal layers | Expired / Lapsed | 1963-01-23 | 1966-07-19 | 2 | Details |
| FR1445549A | Method and apparatus for transferring heat through hollow p… | Expired / Lapsed | 1965-05-05 | 1966-07-15 | 0 | Details |
| US3256258A | Fibers | Expired / Lapsed | 1961-05-05 | 1966-06-14 | 2 | Details |
| US3254408A | Spring urged cutter | Expired / Lapsed | 1963-12-19 | 1966-06-07 | 2 | Details |
| US3255099A | Surface treatment of polymeric shaped structures | Expired / Lapsed | 1963-10-21 | 1966-06-07 | 2 | Details |
| US3255034A | Process for producing a coated, biaxially oriented polyolef… | Expired / Lapsed | 1962-10-17 | 1966-06-07 | 2 | Details |
| US3255064A | Process for mechanical crimping of fibers in sheet form | Expired / Lapsed | 1961-07-17 | 1966-06-07 | 3 | Details |
| FR1455991A | heat exchanger and its manufacturing process | Expired / Lapsed | 1965-08-11 | 1966-05-20 | 0 | Details |
| US3251181A | Coherent bulky yarn and process for its production | Expired / Lapsed | 1964-07-09 | 1966-05-17 | 1 | Details |
| US3250808A | Fluorocarbon ethers derived from hexafluoropropylene epoxide | Expired / Lapsed | 1963-10-31 | 1966-05-10 | 2 | Details |
| US3250807A | Dicarboxylic acids of fluorocarbon ethers and fluorides, es… | Expired / Lapsed | 1963-08-23 | 1966-05-10 | 2 | Details |
| US3248241A | Preparation of highly impervious refractories | Expired / Lapsed | 1963-07-11 | 1966-04-26 | 2 | Details |
| US3248352A | Polymeric materials containing oxidized amine radicals and … | Expired / Lapsed | 1961-09-08 | 1966-04-26 | 2 | Details |
| US3248260A | Interpolymers of nu-methylol acrylamides and compositions c… | Expired / Lapsed | 1961-08-22 | 1966-04-26 | 4 | Details |
| US3246764A | Fluid separation | Expired / Lapsed | 1961-11-30 | 1966-04-19 | 2 | Details |
| US3246061A | Process for preparing biaxially oriented polypropylene film | Expired / Lapsed | 1962-08-17 | 1966-04-12 | 2 | Details |
| US3245972A | Polytetrafluoroethylene molding powder and its preparation | Expired / Lapsed | 1962-06-21 | 1966-04-12 | 3 | Details |
| US3240811A | Selected fluorinated acyloins and 1, 2-diketones and their … | Expired / Lapsed | 1961-09-06 | 1966-03-15 | 4 | Details |
| US3240765A | Thiocarbonyl fluorides and their polymers | Expired / Lapsed | 1961-05-01 | 1966-03-15 | 4 | Details |
| US3238055A | Poromeric material and method of making same | Expired / Lapsed | 1963-04-12 | 1966-03-01 | 3 | Details |
| FR1461386A | Synthetic textile fiber enhancements | Expired / Lapsed | 1965-04-20 | 1966-02-25 | 0 | Details |
| US3235426A | Method of rendering thermoplastic resins receptive to coati… | Expired / Lapsed | 1961-08-01 | 1966-02-15 | 2 | Details |
| US3232886A | Resistor compositions | Expired / Lapsed | 1962-09-20 | 1966-02-01 | 2 | Details |
| US3231449A | Apparatus for sealing thermoplastic material | Expired / Lapsed | 1964-07-14 | 1966-01-25 | 0 | Details |
| FR1425333A | Preparation of high molecular weight polylactides | Expired / Lapsed | 1964-11-06 | 1966-01-24 | 0 | Details |
| US3220173A | Trilobal filamentary yarns | Expired / Lapsed | 1964-12-02 | 1965-11-30 | 2 | Details |
| US3218199A | Process for hardening metals using explosive means | Expired / Lapsed | 1963-08-14 | 1965-11-16 | 2 | Details |
| US3216187A | High strength polyethylene terephthalate yarn | Expired / Lapsed | 1963-12-27 | 1965-11-09 | 2 | Details |
| US3208875A | Method of making vapor permeable sheet materials | Expired / Lapsed | 1962-01-05 | 1965-09-28 | 2 | Details |
| US3206418A | Process of polymerizing and foaming a lactam containing a n… | Expired / Lapsed | 1963-03-21 | 1965-09-14 | 2 | Details |
| US3205042A | Fluidized process for producing carbides | Expired / Lapsed | 1961-10-17 | 1965-09-07 | 1 | Details |
| US3203793A | Porous columbium and tantalum materials | Expired / Lapsed | 1963-01-28 | 1965-08-31 | 2 | Details |
| US3203919A | Acrylic/siloxane copolymer, polysiloxane composition contai… | Expired / Lapsed | 1962-09-19 | 1965-08-31 | 2 | Details |
| US3201051A | Process of salt milling a mill powder | Expired / Lapsed | 1963-07-25 | 1965-08-17 | 2 | Details |
| US3201506A | Addition of magnesium silicate to a polyester in the manufa… | Expired / Lapsed | 1962-08-09 | 1965-08-17 | 2 | Details |
| US3201374A | Terpolymers containing at least 65% ethylene | Expired / Lapsed | 1961-06-21 | 1965-08-17 | 2 | Details |
| US3201572A | Control method and apparatus | Expired / Lapsed | 1961-05-08 | 1965-08-17 | 2 | Details |
| US3199281A | Composite polyester yarn of differentially shrinkable conti… | Expired / Lapsed | 1961-09-27 | 1965-08-10 | 2 | Details |
| US3195602A | Pneumatic tire | Expired / Lapsed | 1963-02-27 | 1965-07-20 | 2 | Details |
| US3194793A | Polyurethanes cured with mixtures of aromatic primary and s… | Expired / Lapsed | 1961-12-13 | 1965-07-13 | 2 | Details |
| US3193601A | Recovery of resin scrap | Expired / Lapsed | 1962-08-01 | 1965-07-06 | 2 | Details |
| US3190339A | Pneumatic tire | Expired / Lapsed | 1963-01-24 | 1965-06-22 | 2 | Details |
| US3190766A | Method of making vapor permeable sheet materials | Expired / Lapsed | 1961-10-31 | 1965-06-22 | 2 | Details |
| US3190765A | Vapor permeable sheet material and method of making same | Expired / Lapsed | 1961-06-26 | 1965-06-22 | 2 | Details |
| US3188790A | Nylon fiber blends | Expired / Lapsed | 1963-06-12 | 1965-06-15 | 1 | Details |
| US3189573A | Petroleum wax-ethylene vinyl acetate copolymer composition | Expired / Lapsed | 1962-10-01 | 1965-06-15 | 1 | Details |
| US3187607A | Spinneret production | Expired / Lapsed | 1962-07-24 | 1965-06-08 | 0 | Details |
| US3188302A | Diamine cured fluid polyether urethane compositions | Expired / Lapsed | 1959-01-30 | 1965-06-08 | 2 | Details |
| US3186155A | Textile product of synthetic organic filaments having rando… | Expired / Lapsed | 1963-06-06 | 1965-06-01 | 1 | Details |
| US3186950A | Rare earth tungstate and molybdate luminophors | Expired / Lapsed | 1962-04-30 | 1965-06-01 | 2 | Details |
| US3184369A | Polyester filaments having improved frictional characterist… | Expired / Lapsed | 1963-07-10 | 1965-05-18 | 2 | Details |
| US3180727A | Composition containing a dispersionhardening phase and a pr… | Expired / Lapsed | 1962-02-20 | 1965-04-27 | 2 | Details |
| US3179634A | Aromatic polyimides and the process for preparing them | Expired / Lapsed | 1962-01-26 | 1965-04-20 | 2 | Details |
| US3179631A | Aromatic polyimide particles from polycyclic diamines | Expired / Lapsed | 1962-01-26 | 1965-04-20 | 2 | Details |
| US3171062A | Tool immobilizer circuit | Expired / Lapsed | 1962-04-11 | 1965-02-23 | 2 | Details |
| US3170833A | Adhesive compositions and laminates prepared therefrom | Expired / Lapsed | 1961-03-02 | 1965-02-23 | 4 | Details |
| US3169296A | Apparatus for fluid treatment of synthetic filaments | Expired / Lapsed | 1963-02-14 | 1965-02-16 | 2 | Details |
| US3169558A | Elastic fabric and process for preparing same | Expired / Lapsed | 1962-09-13 | 1965-02-16 | 2 | Details |
| CA703377A | Monomer-polymer acrylic sirups | Expired / Lapsed | — | 1965-02-09 | 0 | Details |
| US3166435A | Drying process for hydrophilic films | Expired / Lapsed | 1961-11-28 | 1965-01-19 | 2 | Details |
| US3165499A | Film and process for making same | Expired / Lapsed | 1960-10-27 | 1965-01-12 | 1 | Details |
| US3161011A | Bulky textile yarn and process for preparing same | Expired / Lapsed | 1962-11-05 | 1964-12-15 | 3 | Details |
| US3161537A | Process for increasing the scratch resistance of glass | Expired / Lapsed | 1961-12-22 | 1964-12-15 | 2 | Details |
| US3161484A | Temperature control system for heat treatment of running ya… | Expired / Lapsed | 1960-11-16 | 1964-12-15 | 2 | Details |
| US3156549A | Method of melting silicon | Expired / Lapsed | 1958-04-04 | 1964-11-10 | 0 | Details |
| US3155754A | Process for producing oriented synthetic linear polyester f… | Expired / Lapsed | 1962-04-11 | 1964-11-03 | 2 | Details |
| US3154238A | Reinforced bag | Expired / Lapsed | 1961-12-26 | 1964-10-27 | 1 | Details |
| US3145446A | Process for producing tufted structures | Expired / Lapsed | 1962-11-21 | 1964-08-25 | 2 | Details |
| US3145133A | Polyamide filament | Expired / Lapsed | 1962-12-21 | 1964-08-18 | 2 | Details |
| US3145222A | Addition of polyfluoroalkyl iodides to unsaturated compound… | Expired / Lapsed | 1961-02-23 | 1964-08-18 | 4 | Details |
| US3143784A | Process of drawing for bulky yarn | Expired / Lapsed | 1962-07-05 | 1964-08-11 | 2 | Details |
| US3144436A | Process for degrading stereoregular polymers | Expired / Lapsed | 1961-01-04 | 1964-08-11 | 2 | Details |
| US3142665A | Novel tetrafluoroethylene resins and their preparation | Expired / Lapsed | 1960-07-26 | 1964-07-28 | 4 | Details |
| US3140537A | Explosive welding process | Expired / Lapsed | 1961-06-30 | 1964-07-14 | 2 | Details |
| US3136680A | Polytetrafluoroethylene copper laminate | Expired / Lapsed | 1960-08-15 | 1964-06-09 | 2 | Details |
| US3134655A | Apparatus and method for steampolymer separation | Expired / Lapsed | 1960-08-23 | 1964-05-26 | 2 | Details |
| US3133829A | Method of applying protective coatings to metals | Expired / Lapsed | 1959-02-02 | 1964-05-19 | 2 | Details |
| CA686392A | Windshield de-icing composition | Expired / Lapsed | — | 1964-05-12 | 0 | Details |
| US3133138A | Stretching and heat crystallization of poly(meta-phenylene … | Expired / Lapsed | 1958-12-19 | 1964-05-12 | 2 | Details |
| US3130071A | Process for increasing the scratch resistance of glass by t… | Expired / Lapsed | 1961-03-23 | 1964-04-21 | 2 | Details |
| US3129053A | Dispersions of organic dyes and pigments in fluoroalcohols | Expired / Lapsed | 1962-05-21 | 1964-04-14 | 2 | Details |
| US3121762A | Method and apparatus for producing regenerated cellulose fi… | Expired / Lapsed | 1961-07-17 | 1964-02-18 | 2 | Details |
| US3118846A | Composition comprising tetrafluoroethylene polymer and cell… | Expired / Lapsed | 1956-12-24 | 1964-01-21 | 2 | Details |
| US3117173A | Process of preparing substantially oriented filaments havin… | Expired / Lapsed | 1962-03-19 | 1964-01-07 | 2 | Details |
| US3115691A | Apparatus for interlacing multifilament yarn | Expired / Lapsed | 1961-05-31 | 1963-12-31 | 2 | Details |
| US3113936A | Fluorothiacyl chlorides and polymers thereof | Expired / Lapsed | 1959-08-17 | 1963-12-10 | 2 | Details |
| US3110151A | Process for producing compact interlaced yarn | Expired / Lapsed | 1961-05-26 | 1963-11-12 | 2 | Details |
| US3110630A | Electrolytic cell | Expired / Lapsed | 1960-08-11 | 1963-11-12 | 2 | Details |
| US3110742A | Polyalkyl benzene manufacture | Expired / Lapsed | 1960-07-20 | 1963-11-12 | 2 | Details |
| US3107972A | Process for producing bulkable filamentary polyamide yarns | Expired / Lapsed | 1962-10-24 | 1963-10-22 | 2 | Details |
| US3107198A | Laminated prepared with werner complex coating on an alumin… | Expired / Lapsed | 1959-12-22 | 1963-10-15 | 2 | Details |
| US3104419A | Spinneret pack | Expired / Lapsed | 1962-08-24 | 1963-09-24 | 2 | Details |
| US3104450A | Textile material | Expired / Lapsed | 1960-01-12 | 1963-09-24 | 2 | Details |
| US3100925A | Apparatus for compressional finishing of fabrics | Expired / Lapsed | 1960-12-02 | 1963-08-20 | 2 | Details |
| US3101276A | Process for grafting polymers to cellulose substrates | Expired / Lapsed | 1957-07-08 | 1963-08-20 | 2 | Details |
| US3100721A | Process for producing microporous films and coatings | Expired / Lapsed | 1961-02-21 | 1963-08-13 | 2 | Details |
| US3099262A | Physiologic fluid pressure sensing head | Expired / Lapsed | 1962-06-21 | 1963-07-30 | 2 | Details |
| US3096563A | Novel fabric of improved cover and reduced slickness | Expired / Lapsed | 1959-06-18 | 1963-07-09 | 2 | Details |
| US3096207A | Process of imparting oil-repellency to solid materials | Expired / Lapsed | 1960-09-06 | 1963-07-02 | 3 | Details |
| US3095258A | Melt spinning process for producing hollow-core filament | Expired / Lapsed | 1962-06-22 | 1963-06-25 | 2 | Details |
| US3094374A | Dry spinning process for preparing coalesced spandex filame… | Expired / Lapsed | 1961-07-11 | 1963-06-18 | 2 | Details |
| US3094433A | Elastomeric foam haivng its pore walls coated with fir ous … | Expired / Lapsed | 1959-11-27 | 1963-06-18 | 2 | Details |
| US3092874A | Production of thermoplastic polymeric film | Expired / Lapsed | 1961-07-17 | 1963-06-11 | 1 | Details |
| US3091015A | Drawing of nylon | Expired / Lapsed | 1959-03-12 | 1963-05-28 | 2 | Details |
| US3090664A | Graft polymerizing an unsaturated organic acid or salt ther… | Expired / Lapsed | 1958-03-31 | 1963-05-21 | 2 | Details |
| US3089187A | Manufacture of improved thermoplastic pipe | Expired / Lapsed | 1960-05-06 | 1963-05-14 | 1 | Details |
| US3088173A | Process for preparing oriented polymeric linear terephthala… | Expired / Lapsed | 1961-06-02 | 1963-05-07 | 2 | Details |
| US3088941A | Process for the preparation of improved polytetrafluoroethy… | Expired / Lapsed | 1960-03-11 | 1963-05-07 | 2 | Details |
| US3087828A | Nacreous pigment compositions | Expired / Lapsed | 1961-06-28 | 1963-04-30 | 2 | Details |
| US3087435A | Pumping process | Expired / Lapsed | 1961-03-31 | 1963-04-30 | 2 | Details |
| US3085083A | Stabilized tetrafluoroethylene-fluoro-olefin copolymers hav… | Expired / Lapsed | 1959-05-05 | 1963-04-09 | 2 | Details |
| US3083224A | Polyfluoroalkyl phosphates | Expired / Lapsed | 1961-12-08 | 1963-03-26 | 2 | Details |
| US3082369A | Inverter apparatus | Expired / Lapsed | 1961-07-27 | 1963-03-19 | 2 | Details |
| US3082084A | Process for producing a dispersion of an oxide in a metal | Expired / Lapsed | 1960-05-09 | 1963-03-19 | 2 | Details |
| US3079641A | Process for molding a polyurethane foam by shaping it witho… | Expired / Lapsed | 1959-02-27 | 1963-03-05 | 2 | Details |
| US3077006A | Production of staple fibers | Expired / Lapsed | 1961-10-30 | 1963-02-12 | 1 | Details |
| US3076185A | Annunciator system | Expired / Lapsed | 1960-03-22 | 1963-01-29 | 2 | Details |
| US3074901A | Composition comprising polytetrafluoroethylene particles ad… | Expired / Lapsed | 1956-12-24 | 1963-01-22 | 0 | Details |
| US3073953A | Process for producing images | Expired / Lapsed | 1959-07-29 | 1963-01-15 | 2 | Details |
| US3073784A | Electrically conductive polymeric compositions | Expired / Lapsed | 1959-07-02 | 1963-01-15 | 1 | Details |
| CA655193A | Fluorocarbon resin compositions | Expired / Lapsed | — | 1963-01-01 | 0 | Details |
| US3069726A | Process for preparing articles having sections with metalli… | Expired / Lapsed | 1961-05-24 | 1962-12-25 | 0 | Details |
| US3069836A | Yarn relaxation process using fluid jets | Expired / Lapsed | 1959-04-02 | 1962-12-25 | 0 | Details |
| US3069397A | Fluorothioketones and their polymers | Expired / Lapsed | 1959-12-18 | 1962-12-18 | 4 | Details |
| US3069396A | Polymers of polyfluorothioketone | Expired / Lapsed | 1959-02-09 | 1962-12-18 | 2 | Details |
| US3069292A | Composition comprising particles of refractory oxide, coate… | Expired / Lapsed | 1958-07-16 | 1962-12-18 | 2 | Details |
| US3068207A | Process for increasing the dyeability of linear condensatio… | Expired / Lapsed | 1959-09-21 | 1962-12-11 | 2 | Details |
| US3067483A | Sheet material and process of making same | Expired / Lapsed | 1959-08-24 | 1962-12-11 | 2 | Details |
| US3067482A | Sheet material and process of making same | Expired / Lapsed | 1959-08-24 | 1962-12-11 | 2 | Details |
| US3065207A | Polymer containing tertiary amino radical | Expired / Lapsed | 1961-01-30 | 1962-11-20 | 2 | Details |
| US3065242A | Production of acyl halides, carboxylic acids and lactones | Expired / Lapsed | 1960-02-23 | 1962-11-20 | 2 | Details |
| US3061882A | Process for producing a heat-sealable printable polyethylen… | Expired / Lapsed | 1959-08-27 | 1962-11-06 | 2 | Details |
| US3062750A | Treatment of zinc sulfide phosphors | Expired / Lapsed | 1959-08-19 | 1962-11-06 | 1 | Details |
| US3062764A | Aqueous coating composition comprising polytetrafluoroethyl… | Expired / Lapsed | 1959-04-13 | 1962-11-06 | 2 | Details |
| US3060023A | Image reproduction processes | Expired / Lapsed | 1959-08-05 | 1962-10-23 | 2 | Details |
| US3059238A | Equipment performance recorder | Expired / Lapsed | 1960-02-25 | 1962-10-16 | 0 | Details |
| US3058845A | Process for metallizing polyacrylonitrile shaped article by… | Expired / Lapsed | 1959-06-23 | 1962-10-16 | 2 | Details |
| US3055080A | Apparatus for fluid treatment of tow and yarn bundles | Expired / Lapsed | 1960-07-19 | 1962-09-25 | 0 | Details |
| US3052573A | Resistor and resistor composition | Expired / Lapsed | 1960-03-02 | 1962-09-04 | 2 | Details |
| US3052376A | Dispensing apparatus | Expired / Lapsed | 1959-06-03 | 1962-09-04 | 0 | Details |
| US3051683A | Polytetrafluoroethylene-hexafluoro-propylene-tetrafluoroeth… | Expired / Lapsed | 1959-11-10 | 1962-08-28 | 2 | Details |
| US3051212A | Reinforced composite structures | Expired / Lapsed | 1959-06-26 | 1962-08-28 | 4 | Details |
| US3044989A | Segmented copolymers | Expired / Lapsed | 1958-08-05 | 1962-07-17 | 2 | Details |
| US3044987A | Segmented copolymers and process for preparing same | Expired / Lapsed | 1958-08-05 | 1962-07-17 | 2 | Details |
| US3043088A | Process for making bulky yarn | Expired / Lapsed | 1958-11-26 | 1962-07-10 | 0 | Details |
| US3043709A | Organic polymeric structure having an ultraviolet light abs… | Expired / Lapsed | 1958-07-18 | 1962-07-10 | 2 | Details |
| US3043790A | Butadiene-styrene copolymer-cement composition and method o… | Expired / Lapsed | 1957-09-20 | 1962-07-10 | 1 | Details |
| US3042479A | Chlorofluorohydrocarbons in dry cleaning compositions and p… | Expired / Lapsed | 1960-11-29 | 1962-07-03 | 2 | Details |
| US3042482A | Process and apparatus for wet spinning slub yarn | Expired / Lapsed | 1959-11-23 | 1962-07-03 | 2 | Details |
| US3039895A | Textile | Expired / Lapsed | 1960-03-29 | 1962-06-19 | 2 | Details |
| US3038237A | Novel crimped and crimpable filaments and their preparation | Expired / Lapsed | 1958-11-03 | 1962-06-12 | 2 | Details |
| US3038236A | Crimped textile products | Expired / Lapsed | 1958-11-03 | 1962-06-12 | 2 | Details |
| US3038870A | Process of preparing and extruding an aqueous gel of polyte… | Expired / Lapsed | 1956-12-27 | 1962-06-12 | 0 | Details |
| US3038235A | Textile fibers and their manufacture | Expired / Lapsed | 1956-12-06 | 1962-06-12 | 2 | Details |
| US3037953A | Concentration of aqueous colloidal dispersions of polytetra… | Expired / Lapsed | 1961-04-26 | 1962-06-05 | 2 | Details |
| US3036996A | Cured polyetherurethanes | Expired / Lapsed | 1961-02-01 | 1962-05-29 | 2 | Details |
| US3036188A | Heating apparatus | Expired / Lapsed | 1959-02-24 | 1962-05-22 | 0 | Details |
| US3034942A | Pile fabric and method for making same | Expired / Lapsed | 1959-08-18 | 1962-05-15 | 1 | Details |
| US3031770A | Strand-treating apparatus | Expired / Lapsed | 1959-08-31 | 1962-05-01 | 0 | Details |
| US3030183A | Titanium dioxide fibers and their preparation | Expired / Lapsed | 1958-09-18 | 1962-04-17 | 1 | Details |
| US3028627A | Spinneret pack assembly | Expired / Lapsed | 1959-04-10 | 1962-04-10 | 0 | Details |
| US3029121A | Process of coloring by oxidizing solid polyesters of tereph… | Expired / Lapsed | 1959-04-08 | 1962-04-10 | 2 | Details |
| US3028366A | Catalytic process for the preparation of substantially colo… | Expired / Lapsed | 1956-06-26 | 1962-04-03 | 2 | Details |
| US3024110A | Processes for producing dispersions of refractory metal oxi… | Expired / Lapsed | 1958-07-21 | 1962-03-06 | 2 | Details |
| US3023192A | Segmented copolyetherester elastomers | Expired / Lapsed | 1958-05-29 | 1962-02-27 | 2 | Details |
| US3020148A | Production of refractory metals | Expired / Lapsed | 1960-04-05 | 1962-02-06 | 2 | Details |
| US3019103A | Process for producing sintered metals with dispersed oxides | Expired / Lapsed | 1957-11-04 | 1962-01-30 | 2 | Details |
| US3017740A | Process for core-spinning smooth elastic yarn | Expired / Lapsed | 1958-12-24 | 1962-01-23 | 0 | Details |
| US3017737A | Method and apparatus for producing bulky continuous filamen… | Expired / Lapsed | 1958-06-25 | 1962-01-23 | 2 | Details |
| US3017282A | Stable, aqueous solutions of organic titanium compounds | Expired / Lapsed | 1957-04-12 | 1962-01-16 | 2 | Details |
| US3016599A | Microfiber and staple fiber batt | Expired / Lapsed | 1954-06-01 | 1962-01-16 | 0 | Details |
| US3015604A | Porous polytetrafluoroethylene article containing glass mic… | Expired / Lapsed | 1957-05-02 | 1962-01-02 | 0 | Details |
| US3014818A | Electrically conducting articles and process of making same | Expired / Lapsed | 1957-12-09 | 1961-12-26 | 2 | Details |
| US3013379A | Process for making elastic bulky composite yarn | Expired / Lapsed | 1960-07-05 | 1961-12-19 | 0 | Details |
| US3013936A | Synthetic fiber papers | Expired / Lapsed | 1958-01-07 | 1961-12-19 | 2 | Details |
| US3012862A | Silicon production | Expired / Lapsed | 1960-08-16 | 1961-12-12 | 2 | Details |
| US3012995A | Product of a diene polymer and a halogen-containing thioket… | Expired / Lapsed | 1959-11-02 | 1961-12-12 | 2 | Details |
| US3012993A | Branched chain polyurethane polymers | Expired / Lapsed | 1958-04-21 | 1961-12-12 | 2 | Details |
| US3012284A | Process for preparing cored cellular articles | Expired / Lapsed | 1957-11-01 | 1961-12-12 | 2 | Details |
| US3012987A | Coating composition comprising a blend of polyurethane reac… | Expired / Lapsed | 1957-04-08 | 1961-12-12 | 2 | Details |
| US3010918A | Chemical compounds | Expired / Lapsed | 1958-05-26 | 1961-11-28 | 2 | Details |
| US3009309A | Fluid jet twist crimping process | Expired / Lapsed | 1956-07-16 | 1961-11-21 | 0 | Details |
| US3008215A | Antistatic textile material | Expired / Lapsed | 1958-01-31 | 1961-11-14 | 2 | Details |
| US3007205A | Process of forming a cured foam rubber layer having a texti… | Expired / Lapsed | 1957-08-08 | 1961-11-07 | 2 | Details |
| US3007227A | Staple fiber blends | Expired / Lapsed | 1957-04-30 | 1961-11-07 | 2 | Details |
| US3006899A | Polyamides from reaction of aromatic diacid halide dissolve… | Expired / Lapsed | 1957-02-28 | 1961-10-31 | 2 | Details |
| US3003884A | Fresh meat package and method | Expired / Lapsed | 1958-03-10 | 1961-10-10 | 2 | Details |
| US3003223A | Metal core composite filaments | Expired / Lapsed | 1957-03-25 | 1961-10-10 | 2 | Details |
| US3000844A | Film-forming composition comprising particulate polyvinyl f… | Expired / Lapsed | 1959-05-21 | 1961-09-19 | 2 | Details |
| US3000757A | Process for coating substrates with a vapor permeable polym… | Expired / Lapsed | 1957-01-28 | 1961-09-19 | 2 | Details |
| US2999296A | Novel filaments and fabrics | Expired / Lapsed | 1957-03-25 | 1961-09-12 | 1 | Details |
| US2997385A | Method of producing refractory metal | Expired / Lapsed | 1958-10-29 | 1961-08-22 | 1 | Details |
| US2997448A | Molded fluorocarbon polymer product and method of preparing… | Expired / Lapsed | 1958-09-24 | 1961-08-22 | 3 | Details |
| US2995779A | Treatment for polymeric film to restrain gauge variation | Expired / Lapsed | 1959-03-12 | 1961-08-15 | 2 | Details |
| US2995469A | Apparatus and process for coating a flexible web | Expired / Lapsed | 1957-08-21 | 1961-08-08 | 2 | Details |
| US2993816A | Conducting textryls | Expired / Lapsed | 1960-03-30 | 1961-07-25 | 2 | Details |
| US2993025A | Polyoxymethylene compositions stabilized with a synthetic s… | Expired / Lapsed | 1958-06-02 | 1961-07-18 | 2 | Details |
| US2992133A | Coated organic film and process | Expired / Lapsed | 1959-10-29 | 1961-07-11 | 2 | Details |
| US2990581A | Process for vacuum thermoforming | Expired / Lapsed | 1959-07-14 | 1961-07-04 | 0 | Details |
| US2990671A | Multiple vortex pneumatic twister and method of producing a… | Expired / Lapsed | 1959-03-17 | 1961-07-04 | 0 | Details |
| US2990398A | Hydroxyethylation of polyvinyl alcohol | Expired / Lapsed | 1958-07-31 | 1961-06-27 | 2 | Details |
| US2989433A | Process of preparing laminated structures | Expired / Lapsed | 1957-06-18 | 1961-06-20 | 2 | Details |
| US2987765A | Process and apparatus for forming tubes | Expired / Lapsed | 1960-07-07 | 1961-06-13 | 0 | Details |
| US2987767A | Fluid forming of plastics | Expired / Lapsed | 1959-03-05 | 1961-06-13 | 0 | Details |
| US2988524A | Copolymer of methyl methacrylate, alkyd resin and modified … | Expired / Lapsed | 1958-06-19 | 1961-06-13 | 3 | Details |
| US2987797A | Sheath and core textile filament | Expired / Lapsed | 1956-10-08 | 1961-06-13 | 2 | Details |
| US2985995A | Compact interlaced yarn | Expired / Lapsed | 1960-11-08 | 1961-05-30 | 1 | Details |
| US2985940A | Production of high bulk fabrics from staple fiber mixtures | Expired / Lapsed | 1955-11-30 | 1961-05-30 | 0 | Details |
| US2985519A | Production of silicon | Expired / Lapsed | 1958-06-02 | 1961-05-23 | 2 | Details |
| US2984576A | Uses of zirconia sols | Expired / Lapsed | 1956-10-10 | 1961-05-16 | 2 | Details |
| US2982000A | Apparatus for bulking yarn | Expired / Lapsed | 1956-07-19 | 1961-05-02 | 0 | Details |
| US2981978A | Process of shrinking solid polymethylene terephthalate with… | Expired / Lapsed | 1955-08-30 | 1961-05-02 | 2 | Details |
| US2979777A | Tubular film stretching process | Expired / Lapsed | 1958-11-06 | 1961-04-18 | 0 | Details |
| US2980492A | Process for preparing textile yarns | Expired / Lapsed | 1958-05-27 | 1961-04-18 | 2 | Details |
| US2979883A | Composite yarn and process of producing bulked fabric there… | Expired / Lapsed | 1957-08-12 | 1961-04-18 | 0 | Details |
| US2978788A | Process for treating synthetic yarn | Expired / Lapsed | 1955-07-13 | 1961-04-11 | 2 | Details |
| US2977370A | Production of 2-oxazolidones | Expired / Lapsed | 1959-04-13 | 1961-03-28 | 2 | Details |
| US2977243A | Coating process | Expired / Lapsed | 1958-10-02 | 1961-03-28 | 2 | Details |
| US2977336A | Coating composition containing polysiloxane resin and polys… | Expired / Lapsed | 1955-07-18 | 1961-03-28 | 2 | Details |
| US2976294A | Dye intermediates | Expired / Lapsed | 1959-01-26 | 1961-03-21 | 2 | Details |
| US2976185A | Coated polymeric thermoplastic dielectric film | Expired / Lapsed | 1955-12-12 | 1961-03-21 | 2 | Details |
| US2972540A | Photopolymerizable compositions and elements | Expired / Lapsed | 1958-08-05 | 1961-02-21 | 2 | Details |
| US2972529A | Metal oxide-metal composition | Expired / Lapsed | 1958-05-12 | 1961-02-21 | 3 | Details |
| US2971243A | Method and apparatus for depositing tow | Expired / Lapsed | 1960-02-03 | 1961-02-14 | 0 | Details |
| US2970066A | Process of treating polymeric structures and product thereof | Expired / Lapsed | 1959-08-31 | 1961-01-31 | 2 | Details |
| US2968649A | Elastomeric terpolymers | Expired / Lapsed | 1958-12-04 | 1961-01-17 | 0 | Details |
| US2968522A | Process for producing shaped articles of tetrafluoroethylen… | Expired / Lapsed | 1957-12-12 | 1961-01-17 | 2 | Details |
| US2968538A | Delustering of film | Expired / Lapsed | 1956-11-15 | 1961-01-17 | 2 | Details |
| US2968575A | Stable polyurethane latex and process of making same | Expired / Lapsed | 1954-05-21 | 1961-01-17 | 2 | Details |
| US2968637A | Curable dispersions of ethylene polymers and process of cur… | Expired / Lapsed | 1953-07-20 | 1961-01-17 | 2 | Details |
| US2967947A | Sheet inspection method and apparatus | Expired / Lapsed | 1956-10-04 | 1961-01-10 | 0 | Details |
| US2967162A | Coating compositions | Expired / Lapsed | 1958-08-25 | 1961-01-03 | 2 | Details |
| US2966481A | Copolymers of nu-(acylamidomethyl)-acrylamides | Expired / Lapsed | 1955-04-28 | 1960-12-27 | 2 | Details |
| US2965512A | Zinc pyrophosphate treated sulfide phosphors and their prep… | Expired / Lapsed | 1958-10-30 | 1960-12-20 | 2 | Details |
| US2965580A | Treating processes for improving physical properties of pho… | Expired / Lapsed | 1957-07-18 | 1960-12-20 | 2 | Details |
| US2964992A | Differential refractometer cell | Expired / Lapsed | 1956-02-07 | 1960-12-20 | 0 | Details |
| US2963340A | Formation of fibers from polymeric dispersions which contai… | Expired / Lapsed | 1953-04-10 | 1960-12-06 | 2 | Details |
| US2962470A | Linear polyester-polyurethane product and process of prepar… | Expired / Lapsed | 1958-01-09 | 1960-11-29 | 2 | Details |
| US2961426A | Copolymers of omicron-acrylyl phenols and chelates thereof | Expired / Lapsed | 1956-01-05 | 1960-11-22 | 2 | Details |
| US2957791A | Opaque porous pressure-clarifiable films of addition polyme… | Expired / Lapsed | 1960-01-21 | 1960-10-25 | 2 | Details |
| US2957852A | Elastomers derived from hydrazine | Expired / Lapsed | 1955-12-29 | 1960-10-25 | 2 | Details |
| US2956330A | Stabilized yarn | Expired / Lapsed | 1958-03-28 | 1960-10-18 | 2 | Details |
| US2956902A | Primer coating composition containing a polymer predominate… | Expired / Lapsed | 1957-04-30 | 1960-10-18 | 1 | Details |
| US2956899A | Process of forming graft polymers on a shaped polymeric org… | Expired / Lapsed | 1956-10-18 | 1960-10-18 | 2 | Details |
| US2956306A | Process for the extrusion of polyethylene | Expired / Lapsed | 1954-06-21 | 1960-10-18 | 2 | Details |
| US2955056A | Polyurethane foams coated with a polyurethane elastomer | Expired / Lapsed | 1959-02-27 | 1960-10-04 | 2 | Details |
| FR1241564A | Process for modifying a synthetic condensation polymer? tha… | Expired / Lapsed | 1959-11-27 | 1960-09-16 | 0 | Details |
| US2951047A | Preparation of filaments from polytetrafluoroethylene emuls… | Expired / Lapsed | 1956-12-24 | 1960-08-30 | 0 | Details |
| US2949394A | Sheet material | Expired / Lapsed | 1954-03-17 | 1960-08-16 | 2 | Details |
| US2948583A | Process for producing shaped oriented polyester articles ha… | Expired / Lapsed | 1958-03-04 | 1960-08-09 | 2 | Details |
| US2948611A | Photopolymerizable compositions, elements, and processes | Expired / Lapsed | 1957-10-30 | 1960-08-09 | 2 | Details |
| US2948842A | Transducer | Expired / Lapsed | 1955-12-27 | 1960-08-09 | 0 | Details |
| US2946763A | Novel perfluorocarbon polymers | Expired / Lapsed | 1957-03-29 | 1960-07-26 | 2 | Details |
| US2945958A | Light collector | Expired / Lapsed | 1956-10-25 | 1960-07-19 | 0 | Details |
| US2945739A | Process of melt spinning | Expired / Lapsed | 1955-06-23 | 1960-07-19 | 2 | Details |
| US2944914A | Method of esterifying the surface of alumina monohydrate pl… | Expired / Lapsed | 1959-08-17 | 1960-07-12 | 2 | Details |
| US2941911A | Method of forming continuous structures of polytetrafluoroe… | Expired / Lapsed | 1955-11-15 | 1960-06-21 | 1 | Details |
| US2940912A | Initiation of polymerization by preirradiated solid carboxy… | Expired / Lapsed | 1956-10-01 | 1960-06-14 | 2 | Details |
| US2939202A | Synthetic polymer textile filament | Expired / Lapsed | 1959-12-31 | 1960-06-07 | 0 | Details |
| US2939201A | Trilobal textile filament | Expired / Lapsed | 1959-06-24 | 1960-06-07 | 2 | Details |
| US2936733A | Apparatus for coating | Expired / Lapsed | 1958-03-14 | 1960-05-17 | 0 | Details |
| US2937146A | Antifreeze composition | Expired / Lapsed | 1956-11-21 | 1960-05-17 | 2 | Details |
| US2937145A | Antifreeze composition | Expired / Lapsed | 1955-12-22 | 1960-05-17 | 2 | Details |
| US2936877A | Strand processing | Expired / Lapsed | 1954-09-10 | 1960-05-17 | 0 | Details |
| US2933480A | Sulfur vulcanizable unsaturated elastomeric interpolymers o… | Expired / Lapsed | 1959-06-17 | 1960-04-19 | 2 | Details |
| US2933417A | One-side film coating process | Expired / Lapsed | 1958-03-12 | 1960-04-19 | 2 | Details |
| US2933154A | Process for filtering with polytetrafluoroethylene fibers | Expired / Lapsed | 1957-07-31 | 1960-04-19 | 2 | Details |
| US2931090A | Textile apparatus | Expired / Lapsed | 1956-09-18 | 1960-04-05 | 0 | Details |
| US2931091A | Crimped textile filament | Expired / Lapsed | 1954-02-26 | 1960-04-05 | 2 | Details |
| US2929803A | Elastic copolyureas from secondary diamines and process for… | Expired / Lapsed | 1955-01-31 | 1960-03-22 | 2 | Details |
| US2929800A | Polytetramethylene ether polyurethane polymers | Expired / Lapsed | 1953-06-30 | 1960-03-22 | 2 | Details |
| US2926389A | Process for modifying foam structures | Expired / Lapsed | 1958-03-04 | 1960-03-01 | 2 | Details |
| US2927022A | Photopolymerizable compositions and elements and processes … | Expired / Lapsed | 1956-07-09 | 1960-03-01 | 2 | Details |
| US2924540A | Ceramic composition and article | Expired / Lapsed | 1958-05-23 | 1960-02-09 | 1 | Details |
| US2923673A | Preparation of photopolymerizable compounds | Expired / Lapsed | 1958-05-21 | 1960-02-02 | 2 | Details |
| US2923728A | Process of reacting organic compounds with sulfur trioxide | Expired / Lapsed | 1957-11-19 | 1960-02-02 | 2 | Details |
| US2923648A | Di-phase cleaning system | Expired / Lapsed | 1956-09-26 | 1960-02-02 | 4 | Details |
| US2921927A | Process for curing a sulfur-curable polyalkyleneether polyu… | Expired / Lapsed | 1957-07-26 | 1960-01-19 | 2 | Details |
| US2921869A | Coated polymeric thermoplastic dielectric film | Expired / Lapsed | 1956-05-22 | 1960-01-19 | 2 | Details |
| US2920349A | Polyethylene films | Expired / Lapsed | 1957-09-10 | 1960-01-12 | 2 | Details |
| US2920980A | Finishing fabrics | Expired / Lapsed | 1956-03-28 | 1960-01-12 | 2 | Details |
| US2920352A | Process of casting and stretching film | Expired / Lapsed | 1954-04-23 | 1960-01-12 | 2 | Details |
| US2918391A | Resinous coating composition, method of preparing and metho… | Expired / Lapsed | 1956-10-11 | 1959-12-22 | 1 | Details |
| US2917489A | Process for curing liquid urethane polymers | Expired / Lapsed | 1956-03-16 | 1959-12-15 | 2 | Details |
| US2910763A | Felt-like products | Expired / Lapsed | 1955-08-17 | 1959-11-03 | 2 | Details |
| US2910343A | Process for catalytically reducing nitrogen oxides in indus… | Expired / Lapsed | 1955-12-08 | 1959-10-27 | 2 | Details |
| US2910459A | Addition-type copolymers having extralinear glycidyl and am… | Expired / Lapsed | 1955-04-01 | 1959-10-27 | 2 | Details |
| US2909924A | Radiation temperature measurement | Expired / Lapsed | 1954-12-15 | 1959-10-27 | 0 | Details |
| US2909449A | Vinylidene chloride copolymer coating compositions | Expired / Lapsed | 1956-02-03 | 1959-10-20 | 1 | Details |
| US2909443A | Process of making polyethylene film receptive to organic co… | Expired / Lapsed | 1953-09-29 | 1959-10-20 | 2 | Details |
| US2908064A | Non-woven filamentary products and process | Expired / Lapsed | 1956-10-31 | 1959-10-13 | 2 | Details |
| US2907675A | Process of coating polymeric substrates | Expired / Lapsed | 1955-07-08 | 1959-10-06 | 2 | Details |
| US2906658A | Method for the preparation of cementable fluorocarbon polym… | Expired / Lapsed | 1958-02-05 | 1959-09-29 | 1 | Details |
| US2906642A | Process for forming composite cellular structures | Expired / Lapsed | 1957-01-22 | 1959-09-29 | 2 | Details |
| US2906738A | Process of curing polymers of tetrahydrofuran | Expired / Lapsed | 1956-11-19 | 1959-09-29 | 2 | Details |
| US2904844A | Process for embossing polyvinyl acetal sheets | Expired / Lapsed | 1956-02-10 | 1959-09-22 | 2 | Details |
| US2905585A | Self-bonded paper | Expired / Lapsed | 1954-09-30 | 1959-09-22 | 2 | Details |
| US2904522A | Process for the preparation of an expanded plastisol compos… | Expired / Lapsed | 1954-05-24 | 1959-09-15 | 2 | Details |
| CA582945A | Block copolymers of formaldehyde with active hydrogen-conta… | Expired / Lapsed | — | 1959-09-08 | 0 | Details |
| US2900669A | Irreversibly elongatable cellulose triacetate structure and… | Expired / Lapsed | 1957-03-27 | 1959-08-25 | 2 | Details |
| US2901467A | Polyurethane coating compositions | Expired / Lapsed | 1956-04-20 | 1959-08-25 | 2 | Details |
| US2901445A | Cellular polyurethane reaction product containing polysilox… | Expired / Lapsed | 1955-06-17 | 1959-08-25 | 2 | Details |
| US2898882A | Apparatus for coating and drying photographic layers | Expired / Lapsed | 1956-03-01 | 1959-08-11 | 0 | Details |
| US2898237A | Heat-sealable polyethylene terephthalate film and process | Expired / Lapsed | 1957-09-16 | 1959-08-04 | 2 | Details |
| US2898262A | Compositions and methods | Expired / Lapsed | 1957-05-31 | 1959-08-04 | 1 | Details |
| US2898228A | Method for coating polyfluoroethylenes | Expired / Lapsed | 1957-02-18 | 1959-08-04 | 2 | Details |
| US2896253A | Screw for handling thermoplastic resins | Expired / Lapsed | 1957-01-17 | 1959-07-28 | 0 | Details |
| US2897042A | Method for increasing pill resistance and density of blende… | Expired / Lapsed | 1955-06-30 | 1959-07-28 | 2 | Details |
| US2895948A | Polybenzimidazoles | Expired / Lapsed | 1955-10-28 | 1959-07-21 | 2 | Details |
| US2893105A | Formation of felt-like products from synthetic filaments | Expired / Lapsed | 1954-06-11 | 1959-07-07 | 2 | Details |
| US2892712A | Process for preparing relief images | Expired / Lapsed | 1954-04-23 | 1959-06-30 | 2 | Details |
| US2891278A | Spinneret | Expired / Lapsed | 1956-05-14 | 1959-06-23 | 0 | Details |
| US2891921A | Stabilization of polytetrafluoroethylene filler slurries | Expired / Lapsed | 1955-09-22 | 1959-06-23 | 2 | Details |
| US2887366A | Resurfacing of fiber-reinforced resinous articles | Expired / Lapsed | 1955-06-06 | 1959-05-19 | 2 | Details |
| US2884663A | Process for producing improved polymeric terephthalate film | Expired / Lapsed | 1956-12-20 | 1959-05-05 | 2 | Details |
| US2885366A | Product comprising a skin of dense, hydrated amorphous sili… | Expired / Lapsed | 1956-06-28 | 1959-05-05 | 2 | Details |
| US2884334A | Cement and method of stabilizing soil | Expired / Lapsed | 1955-05-04 | 1959-04-28 | 2 | Details |
| US2883261A | Process for filtration during melt spinning | Expired / Lapsed | 1955-02-02 | 1959-04-21 | 1 | Details |
| FR1176654A | Improvements made to explosive granules | Expired / Lapsed | 1957-06-11 | 1959-04-14 | 0 | Details |
| US2881142A | Polytetrafluoroethylene aqueous paste and process for shapi… | Expired / Lapsed | 1954-09-08 | 1959-04-07 | 2 | Details |
| US2880230A | Diamine salts of pyromellitic acid diester | Expired / Lapsed | 1955-06-13 | 1959-03-31 | 2 | Details |
| US2878121A | Photographic elements and processes | Expired / Lapsed | 1954-11-15 | 1959-03-17 | 1 | Details |
| US2877193A | Stabilization of polyurethane reaction products | Expired / Lapsed | 1955-02-23 | 1959-03-10 | 2 | Details |
| US2877212A | Polyurethanes from difunctional polymers of conjugated dien… | Expired / Lapsed | 1954-10-11 | 1959-03-10 | 2 | Details |
| US2876254A | Preparation of esters from olefins, carbon monoxide and alc… | Expired / Lapsed | 1957-04-04 | 1959-03-03 | 2 | Details |
| US2876185A | Chlorination of polyester structure | Expired / Lapsed | 1956-09-06 | 1959-03-03 | 2 | Details |
| US2876186A | Treatment of polyester structure | Expired / Lapsed | 1956-09-06 | 1959-03-03 | 2 | Details |
| US2876131A | Coating of fibrous structrues with tetrafluoroethylene poly… | Expired / Lapsed | 1954-11-23 | 1959-03-03 | 2 | Details |
| US2874445A | Bulking yarn | Expired / Lapsed | 1954-10-04 | 1959-02-24 | 0 | Details |
| US2874444A | Production of curly yarn | Expired / Lapsed | 1954-02-17 | 1959-02-24 | 0 | Details |
| US2869967A | Bulky yarn | Expired / Lapsed | 1957-08-23 | 1959-01-20 | 0 | Details |
| US2869435A | Process and product | Expired / Lapsed | 1956-01-03 | 1959-01-20 | 2 | Details |
| US2869974A | Process for shrinking polyacrylonitrile textiles with speci… | Expired / Lapsed | 1955-03-02 | 1959-01-20 | 2 | Details |
| US2867609A | Preparation of polypyromellitimides | Expired / Lapsed | 1955-06-13 | 1959-01-06 | 2 | Details |
| US2866763A | Process of preparing aqueous dispersion of an acrylonitrile… | Expired / Lapsed | 1956-04-16 | 1958-12-30 | 2 | Details |
| US2866769A | Process for making a mat composed of aluminum silicate fibe… | Expired / Lapsed | 1954-07-28 | 1958-12-30 | 2 | Details |
| US2865702A | Method for preventing adhesion and growth of barnacles | Expired / Lapsed | 1956-04-30 | 1958-12-23 | 0 | Details |
| US2865765A | Process of preserving fresh produce in oriented film | Expired / Lapsed | 1954-12-29 | 1958-12-23 | 2 | Details |
| US2865080A | Method and apparatus for crimping and relaxing filaments | Expired / Lapsed | 1953-10-28 | 1958-12-23 | 0 | Details |
| US2865891A | Linear copolyesters and process | Expired / Lapsed | 1953-09-24 | 1958-12-23 | 2 | Details |
| US2865855A | Textile treating composition | Expired / Lapsed | 1952-08-08 | 1958-12-23 | 1 | Details |
| US2863769A | Process of preparing silver halide dispersions | Expired / Lapsed | 1954-09-03 | 1958-12-09 | 2 | Details |
| US2861319A | Intermittent core filaments | Expired / Lapsed | 1956-12-21 | 1958-11-25 | 2 | Details |
| US2861022A | Thermoplastic film-metal-laminated structure and process | Expired / Lapsed | 1956-01-19 | 1958-11-18 | 2 | Details |
| US2860377A | Method for extruding and foaming resin | Expired / Lapsed | 1955-08-31 | 1958-11-18 | 2 | Details |
| US2859191A | Stable aqueous dispersions of copolymers of vinyl acetate w… | Expired / Lapsed | 1954-07-08 | 1958-11-04 | 1 | Details |
| US2857650A | Needle | Expired / Lapsed | 1954-05-04 | 1958-10-28 | 0 | Details |
| US2853472A | Polyurethane elastomers cured with dhsocyanates | Expired / Lapsed | 1955-02-14 | 1958-09-23 | 1 | Details |
| US2852906A | Method and apparatus for producing bulky continuous filamen… | Expired / Lapsed | 1953-08-20 | 1958-09-23 | 4 | Details |
| US2852497A | Unsaturated sulfonamides of chlorosulfonated olefin polymers | Expired / Lapsed | 1956-07-24 | 1958-09-16 | 2 | Details |
| US2851733A | Process of stretching thermoplastic film | Expired / Lapsed | 1956-01-03 | 1958-09-16 | 2 | Details |
| US2850464A | Manufacture of cellular polyurethane plastics | Expired / Lapsed | 1953-09-22 | 1958-09-02 | 2 | Details |
| US2848752A | Process for the production of porous open-cell structure po… | Expired / Lapsed | 1954-12-03 | 1958-08-26 | 2 | Details |
| US2849418A | Thermosetting epoxide polymer mixtures, method of making sa… | Expired / Lapsed | 1953-11-10 | 1958-08-26 | 2 | Details |
| US2847391A | Vapor-phase polymerization of tetrafluoroethylene in the pr… | Expired / Lapsed | 1955-02-24 | 1958-08-12 | 1 | Details |
| US2844028A | Apparatus for measuring denier | Expired / Lapsed | 1955-05-26 | 1958-07-22 | 0 | Details |
| US2843568A | Polymeric polyether-polyurethanes | Expired / Lapsed | 1955-01-31 | 1958-07-15 | 1 | Details |
| US2843502A | Process of coating a fabric with polytetrafluoroethylene, t… | Expired / Lapsed | 1954-02-17 | 1958-07-15 | 3 | Details |
| US2840548A | Polymeric reaction products of unsaturated dilactones and c… | Expired / Lapsed | 1955-11-25 | 1958-06-24 | 2 | Details |
| US2834093A | Regenerated cellulose filaments and products therefrom | Expired / Lapsed | 1954-05-21 | 1958-05-13 | 2 | Details |
| US2833624A | Production of chlorine dioxide | Expired / Lapsed | 1956-10-02 | 1958-05-06 | 2 | Details |
| US2833740A | Processing of polyurethane polymers prepared from polyalkyl… | Expired / Lapsed | 1955-09-07 | 1958-05-06 | 2 | Details |
| US2833686A | Bonding polytetrafluoroethylene resins | Expired / Lapsed | 1955-06-20 | 1958-05-06 | 2 | Details |
| US2833722A | Detergent compositions | Expired / Lapsed | 1955-03-01 | 1958-05-06 | 2 | Details |
| US2833620A | An inorganic flexible fibrous material consisting of the as… | Expired / Lapsed | 1954-09-24 | 1958-05-06 | 4 | Details |
| US2833730A | Arylene diisocyanate-fatty acid triglyceride-polyol cellula… | Expired / Lapsed | 1953-09-30 | 1958-05-06 | 2 | Details |
| CA556576A | Surface treatment of polyethylene structures | Expired / Lapsed | — | 1958-04-29 | 0 | Details |
| US2832713A | Non-woven sheet material | Expired / Lapsed | 1955-06-21 | 1958-04-29 | 2 | Details |
| US2832747A | Polymeric compositions comprising linear polymers united th… | Expired / Lapsed | 1953-02-18 | 1958-04-29 | 2 | Details |
| US2832746A | Water-insoluble homogeneous polymer blends of a water-insol… | Expired / Lapsed | 1953-02-18 | 1958-04-29 | 2 | Details |
| US2831780A | Method for improving the scratch resistance and strength of… | Expired / Lapsed | 1955-04-21 | 1958-04-22 | 2 | Details |
| US2830945A | Apparatus for water determination | Expired / Lapsed | 1955-05-03 | 1958-04-15 | 2 | Details |
| US2830038A | Poly (polyalkylene ether urethane) polymers containing term… | Expired / Lapsed | 1957-05-07 | 1958-04-08 | 2 | Details |
| US2829944A | Method of extruding an aqueous particulate dispersion of fi… | Expired / Lapsed | 1955-11-14 | 1958-04-08 | 2 | Details |
| US2828528A | Finishing polyester fabrics | Expired / Lapsed | 1956-12-12 | 1958-04-01 | 2 | Details |
| US2828799A | Process of enveloping shaped objects | Expired / Lapsed | 1955-10-10 | 1958-04-01 | 0 | Details |
| US2829070A | Treatment of synthetic linear polyester structures and prod… | Expired / Lapsed | 1955-04-27 | 1958-04-01 | 1 | Details |
| US2829069A | Thermoplastic polymeric films | Expired / Lapsed | 1954-11-22 | 1958-04-01 | 2 | Details |
| US2825706A | Coating compositions comprising polytetrafluoroethylene and… | Expired / Lapsed | 1954-11-23 | 1958-03-04 | 2 | Details |
| US2824337A | Circular extrusion die | Expired / Lapsed | 1955-07-28 | 1958-02-25 | 0 | Details |
| US2824780A | Filament formation from polymeric dispersions | Expired / Lapsed | 1953-04-10 | 1958-02-25 | 2 | Details |
| US2824025A | Thermoplastic polymeric films | Expired / Lapsed | 1956-06-06 | 1958-02-18 | 2 | Details |
| US2824023A | Process of sizing films with polyvinylacetate and starch co… | Expired / Lapsed | 1955-12-13 | 1958-02-18 | 2 | Details |
| US2822357A | Manufacture of polyethylene of controlled molecular weight | Expired / Lapsed | 1955-01-28 | 1958-02-04 | 2 | Details |
| US2822348A | Ester interchange catalysts | Expired / Lapsed | 1951-11-14 | 1958-02-04 | 1 | Details |
| US2821458A | Process for producing uniform polyacrylonitrile fibers by h… | Expired / Lapsed | 1954-04-08 | 1958-01-28 | 2 | Details |
| US2819984A | Regenerated cellulose packaging materials and process of ma… | Expired / Lapsed | 1954-11-22 | 1958-01-14 | 2 | Details |
| US2819192A | Modification of aluminum surfaces | Expired / Lapsed | 1955-12-23 | 1958-01-07 | 2 | Details |
| US2818404A | Curing of polyurethanes with a di(isocyanatoaryl) urea | Expired / Lapsed | 1954-06-07 | 1957-12-31 | 2 | Details |
| US2816349A | Fibers and fabrics | Expired / Lapsed | 1955-11-30 | 1957-12-17 | 1 | Details |
| US2816652A | Shipping container for particulate solids | Expired / Lapsed | 1955-01-31 | 1957-12-17 | 2 | Details |
| US2816883A | Product and process of polymerizing ethylene | Expired / Lapsed | 1951-08-02 | 1957-12-17 | 4 | Details |
| US2815369A | Intermediates for the production of polymers | Expired / Lapsed | 1955-08-26 | 1957-12-03 | 2 | Details |
| US2814606A | Curing process for polyurethane reaction products | Expired / Lapsed | 1955-05-31 | 1957-11-26 | 2 | Details |
| US2813776A | Process for forming films and filaments directly from polym… | Expired / Lapsed | 1955-02-21 | 1957-11-19 | 2 | Details |
| US2809124A | Production of inorganic oxide composition coatings | Expired / Lapsed | 1954-08-26 | 1957-10-08 | 2 | Details |
| US2808347A | Coated polymeric thermoplastic dielectric film and method f… | Expired / Lapsed | 1954-04-23 | 1957-10-01 | 1 | Details |
| US2805627A | Conveyor | Expired / Lapsed | 1953-07-08 | 1957-09-10 | 0 | Details |
| US2805960A | Process for treating polyethylene structures and articles r… | Expired / Lapsed | 1952-11-29 | 1957-09-10 | 2 | Details |
| US2805765A | Textile package formation | Expired / Lapsed | 1951-06-13 | 1957-09-10 | 0 | Details |
| US2804736A | Process for preserving regenerated cellulose pellicle | Expired / Lapsed | 1953-09-14 | 1957-09-03 | 2 | Details |
| US2804645A | Spinneret plate for melt spinning | Expired / Lapsed | 1953-05-12 | 1957-09-03 | 0 | Details |
| US2801447A | Process for treating polyethylene structures | Expired / Lapsed | 1953-04-07 | 1957-08-06 | 2 | Details |
| US2801446A | Process for treating polyethylene structures and articles r… | Expired / Lapsed | 1952-11-29 | 1957-08-06 | 2 | Details |
| US2801244A | Trifunctional isocyanate trimers | Expired / Lapsed | 1956-07-10 | 1957-07-30 | 2 | Details |
| US2794010A | Polymeric blends of a water-insoluble, water-dispersible, n… | Expired / Lapsed | 1953-06-26 | 1957-05-28 | 2 | Details |
| US2791806A | Extrusion of polytetrafluoroethylene at temperatures above … | Expired / Lapsed | 1953-08-21 | 1957-05-14 | 2 | Details |
| US2788335A | Cellular reaction products of castor oil, an epoxy resin, a… | Expired / Lapsed | 1953-07-20 | 1957-04-09 | 1 | Details |
| US2787603A | Aqueous coating compositions and substrates coated therewith | Expired / Lapsed | 1953-07-23 | 1957-04-02 | 2 | Details |
| US2787601A | Cellular plastic materials which are condensation products … | Expired / Lapsed | 1953-03-03 | 1957-04-02 | 2 | Details |
| US2783609A | Bulky continuous filament yarn | Expired / Lapsed | 1951-12-14 | 1957-03-05 | 0 | Details |
| US2782131A | Methyl methacrylate lacquer coated metal article and proces… | Expired / Lapsed | 1954-06-04 | 1957-02-19 | 2 | Details |
| US2782173A | Production of polyvinyl acetate beads and emulsions | Expired / Lapsed | 1953-05-15 | 1957-02-19 | 2 | Details |
| US2782179A | Process for preparing polytetrafluoroethylene-asbestos comp… | Expired / Lapsed | 1953-01-14 | 1957-02-19 | 2 | Details |
| US2782180A | Modified polytetrafluoroethylene compositions and products … | Expired / Lapsed | 1952-08-25 | 1957-02-19 | 2 | Details |
| US2779684A | Polyester films and their preparation | Expired / Lapsed | 1955-02-17 | 1957-01-29 | 1 | Details |
| US2776465A | Highly oriented shaped tetrafluoroethylene article and proc… | Expired / Lapsed | 1954-08-12 | 1957-01-08 | 1 | Details |
| US2776265A | Process for blowing plastisols using n, n'-dinitroso-n, n'-… | Expired / Lapsed | 1954-04-09 | 1957-01-01 | 2 | Details |
| US2775570A | Solutions of formaldehyde polymers | Expired / Lapsed | 1952-08-30 | 1956-12-25 | 2 | Details |
| US2774276A | Colorimeter | Expired / Lapsed | 1951-08-28 | 1956-12-18 | 0 | Details |
| US2773781A | Coated article and method of making | Expired / Lapsed | 1954-09-24 | 1956-12-11 | 2 | Details |
| US2773286A | Process of forming non-woven porous fibrous synthetic leath… | Expired / Lapsed | 1952-07-29 | 1956-12-11 | 0 | Details |
| US2772444A | Composition comprising a polyhalogenated ethylene polymer a… | Expired / Lapsed | 1954-08-12 | 1956-12-04 | 2 | Details |
| US2773027A | Hollow carboxymethyl cellulose bead and method for making | Expired / Lapsed | 1952-05-09 | 1956-12-04 | 1 | Details |
| US2768868A | Improving the dyeing uniformity and thermostability of undr… | Expired / Lapsed | 1953-03-27 | 1956-10-30 | 2 | Details |
| US2767576A | Yarn tensiometer | Expired / Lapsed | 1953-09-14 | 1956-10-23 | 0 | Details |
| US2767435A | Process for longitudinally stretching polymeric film | Expired / Lapsed | 1952-06-05 | 1956-10-23 | 0 | Details |
| FR1124921A | Textile materials and their production process | Expired / Lapsed | — | 1956-10-22 | 0 | Details |
| US2765247A | Non-woven sheet material | Expired / Lapsed | 1953-04-14 | 1956-10-02 | 2 | Details |
| US2764506A | Process for impregnating fibrous material derived from a te… | Expired / Lapsed | 1954-09-24 | 1956-09-25 | 2 | Details |
| US2764060A | Photographic printing exposure control | Expired / Lapsed | 1952-09-23 | 1956-09-25 | 0 | Details |
| US2764504A | Coating process and products therefrom | Expired / Lapsed | 1952-08-28 | 1956-09-25 | 2 | Details |
| US2764468A | Method of preparing resilient acrylonitrile polymer fibers | Expired / Lapsed | 1952-02-23 | 1956-09-25 | 2 | Details |
| US2762791A | Ethylene polymerization | Expired / Lapsed | 1953-09-24 | 1956-09-11 | 2 | Details |
| US2760511A | Pneumatic cycle timer | Expired / Lapsed | 1953-03-04 | 1956-08-28 | 2 | Details |
| US2761067A | Multi-component photometric analysis | Expired / Lapsed | 1953-01-26 | 1956-08-28 | 2 | Details |
| US2758908A | Process of crimping polyethylene terephthalate filaments by… | Expired / Lapsed | 1952-06-25 | 1956-08-14 | 2 | Details |
| US2758075A | Electrodeposition of tin | Expired / Lapsed | 1951-10-15 | 1956-08-07 | 2 | Details |
| US2752860A | Pump | Expired / Lapsed | 1953-02-25 | 1956-07-03 | 2 | Details |
| US2752321A | Lubricating tetrafluoroethylene polymers | Expired / Lapsed | 1953-02-27 | 1956-06-26 | 2 | Details |
| US2750345A | Process for producing sols of 5-8 millimicron silica partic… | Expired / Lapsed | 1954-02-25 | 1956-06-12 | 2 | Details |
| US2749960A | Composite structures | Expired / Lapsed | 1953-09-18 | 1956-06-12 | 2 | Details |
| US2748027A | Sizing of vinylidene chloride copolymer surfaces | Expired / Lapsed | 1953-05-29 | 1956-05-29 | 2 | Details |
| US2747233A | Adjustable stop crimper | Expired / Lapsed | 1952-07-25 | 1956-05-29 | 2 | Details |
| US2747154A | Concrete tool immobilizing circuit | Expired / Lapsed | 1953-09-30 | 1956-05-22 | 1 | Details |
| US2739949A | Polymers of dialkyl methallyliminodialkanoates | Expired / Lapsed | 1952-05-15 | 1956-03-27 | 1 | Details |
| US2739957A | Production of polyethylene terephthalate using an antimony … | Expired / Lapsed | 1952-01-03 | 1956-03-27 | 2 | Details |
| US2739058A | Process for sizing paper with polyethylene | Expired / Lapsed | 1952-07-17 | 1956-03-20 | 2 | Details |
| US2739076A | Product and process | Expired / Lapsed | 1952-03-06 | 1956-03-20 | 4 | Details |
| US2736668A | Process of methoxylating the surface of a siliceous materia… | Expired / Lapsed | 1952-05-09 | 1956-02-28 | 2 | Details |
| FR1111163A | Apparatus for processing yarns | Expired / Lapsed | 1954-08-24 | 1956-02-23 | 0 | Details |
| US2731447A | Novel polyimides | Expired / Lapsed | 1954-06-11 | 1956-01-17 | 2 | Details |
| US2731068A | Tetrafluoroethylene polymer bonded heat-resistant fabric | Expired / Lapsed | 1950-09-23 | 1956-01-17 | 2 | Details |
| US2730478A | Fibrous materials and processes for making same | Expired / Lapsed | 1954-03-05 | 1956-01-10 | 2 | Details |
| US2727879A | Stabilized ethylene polymer compositions | Expired / Lapsed | 1951-12-11 | 1955-12-20 | 2 | Details |
| US2726219A | Polyalkylene ether glycol-arylene diisocyanate elastomer sp… | Expired / Lapsed | 1951-08-24 | 1955-12-06 | 2 | Details |
| US2725309A | Coated non-woven fabric and method of making | Expired / Lapsed | 1951-06-18 | 1955-11-29 | 2 | Details |
| US2723935A | Sheet material | Expired / Lapsed | 1954-10-01 | 1955-11-15 | 2 | Details |
| US2723971A | Polymeric phosphates of copolymers of acyclic ethylenically… | Expired / Lapsed | 1953-03-27 | 1955-11-15 | 2 | Details |
| US2723257A | Vulcanized chlorosulfonated polymers | Expired / Lapsed | 1954-08-27 | 1955-11-08 | 2 | Details |
| US2721812A | Quaternary ammonium organo silanolate, process of treating … | Expired / Lapsed | 1952-04-01 | 1955-10-25 | 2 | Details |
| US2721189A | Polymeric bicyclo-(2, 2, 1)-2-heptene | Expired / Lapsed | 1954-08-30 | 1955-10-18 | 0 | Details |
| US2720468A | Process for gelling | Expired / Lapsed | 1954-05-28 | 1955-10-11 | 1 | Details |
| US2720440A | Bleaching polyacrylonitrile fibers | Expired / Lapsed | 1952-12-26 | 1955-10-11 | 2 | Details |
| US2719100A | Process of heat-sealing tensilized thermoplastic films | Expired / Lapsed | 1952-03-24 | 1955-09-27 | 2 | Details |
| US2717834A | Photographically sensitive elements | Expired / Lapsed | 1952-12-02 | 1955-09-13 | 2 | Details |
| US2716049A | Water-soluble yarn | Expired / Lapsed | 1951-11-01 | 1955-08-23 | 2 | Details |
| US2715591A | Sheet material | Expired / Lapsed | 1952-12-16 | 1955-08-16 | 2 | Details |
| US2715588A | Leatherlike products and preparation of same | Expired / Lapsed | 1952-12-16 | 1955-08-16 | 2 | Details |
| US2715077A | Process for treating polyethylene structures | Expired / Lapsed | 1952-11-29 | 1955-08-09 | 1 | Details |
| US2715076A | Process for treating polyethylene structures and articles r… | Expired / Lapsed | 1952-11-29 | 1955-08-09 | 2 | Details |
| US2714075A | Dilute aqueous dispersions and their application | Expired / Lapsed | 1951-11-27 | 1955-07-26 | 2 | Details |
| US2710266A | Polytetrafluoroethylene coating compositions, method of app… | Expired / Lapsed | 1953-12-21 | 1955-06-07 | 1 | Details |
| US2708203A | Preparation of polymeric titanium organic compounds | Expired / Lapsed | 1953-02-17 | 1955-05-10 | 2 | Details |
| CA511802A | Casting compositions comprising methyl methacrylate and gly… | Expired / Lapsed | — | 1955-04-12 | 0 | Details |
| CA511376A | Aqueous colloidal dispersions of tetrafluoroethylene and th… | Expired / Lapsed | — | 1955-03-29 | 0 | Details |
| US2703316A | Polymers of high melting lactide | Expired / Lapsed | 1951-06-05 | 1955-03-01 | 2 | Details |
| US2702797A | Process for stabilizing a polyurethane | Expired / Lapsed | 1953-04-10 | 1955-02-22 | 2 | Details |
| CA510145A | Liquid phase ethylene polymerization | Expired / Lapsed | — | 1955-02-15 | 0 | Details |
| US2698463A | Molten plastic extrusion process | Expired / Lapsed | 1951-11-03 | 1955-01-04 | 0 | Details |
| US2698241A | Photographic elements and process of preparing the same | Expired / Lapsed | 1952-06-07 | 1954-12-28 | 2 | Details |
| US2698240A | Photographic films and their preparation | Expired / Lapsed | 1952-05-27 | 1954-12-28 | 2 | Details |
| US2698235A | Photographic elements | Expired / Lapsed | 1950-03-16 | 1954-12-28 | 2 | Details |
| US2697662A | Color correction processes | Expired / Lapsed | 1951-07-24 | 1954-12-21 | 2 | Details |
| US2697053A | Method of coating a sheet of polyvinyl butyral resin and la… | Expired / Lapsed | 1951-04-25 | 1954-12-14 | 2 | Details |
| US2695835A | Process for making rough surfaced filaments | Expired / Lapsed | 1949-12-13 | 1954-11-30 | 1 | Details |
| US2694404A | Nitroglycerin transport | Expired / Lapsed | 1952-09-24 | 1954-11-16 | 2 | Details |
| US2692873A | Elastomers from polyalkylene ether glycol reacted with aryl… | Expired / Lapsed | 1952-05-17 | 1954-10-26 | 2 | Details |
| US2692887A | Organo-silicon peroxy compounds and their preparation | Expired / Lapsed | 1952-02-04 | 1954-10-26 | 2 | Details |
| US2692247A | Alpha aminocarboxylic acid polymer compositions | Expired / Lapsed | 1950-07-13 | 1954-10-19 | 2 | Details |
| US2691694A | Polytetrafluoroethylene-glass fiber insulated electrical co… | Expired / Lapsed | 1949-04-09 | 1954-10-12 | 1 | Details |
| US2686931A | Apparatus for extruding beaded film | Expired / Lapsed | 1952-10-27 | 1954-08-24 | 0 | Details |
| US2685707A | Extrusion of tetrafluoroethylene polymer | Expired / Lapsed | 1950-06-30 | 1954-08-10 | 2 | Details |
| US2684348A | Compositions comprising an acrylonitrile polymer, an alkali… | Expired / Lapsed | 1952-02-07 | 1954-07-20 | 2 | Details |
| US2683073A | Process for preventing nylon gel formation | Expired / Lapsed | 1951-08-22 | 1954-07-06 | 2 | Details |
| US2683136A | Copolymers of hydroxyacetic acid with other alcohol acids | Expired / Lapsed | 1950-10-25 | 1954-07-06 | 2 | Details |
| CA502597A | Polymerization of ethylene at super pressures | Expired / Lapsed | — | 1954-05-18 | 0 | Details |
| CA502040A | Fabrication of polytetrafluoroethylene articles | Expired / Lapsed | — | 1954-05-04 | 0 | Details |
| US2677699A | Quaternary ammonium salts of oxygen containing strong sulfu… | Expired / Lapsed | 1952-01-21 | 1954-05-04 | 2 | Details |
| US2677679A | Quaternary ammonium polymers of the acrylic type | Expired / Lapsed | 1951-03-21 | 1954-05-04 | 1 | Details |
| US2676945A | Condensation polymers of hydroxyacetic acid | Expired / Lapsed | 1950-10-18 | 1954-04-27 | 1 | Details |
| US2676923A | Purification of hydrogen peroxide | Expired / Lapsed | 1950-06-24 | 1954-04-27 | 2 | Details |
| US2676166A | Polymeric quaternary ammonium compounds | Expired / Lapsed | 1952-04-01 | 1954-04-20 | 2 | Details |
| US2676120A | Sizing of ethylene polymer structures | Expired / Lapsed | 1951-09-13 | 1954-04-20 | 1 | Details |
| US2675403A | Carbamates containing the cycloheptatrien-1-ol-2-one ring | Expired / Lapsed | 1951-07-13 | 1954-04-13 | 2 | Details |
| US2670387A | Fluorination of trifluorotrichloro-propene | Expired / Lapsed | 1949-04-29 | 1954-02-23 | 2 | Details |
| US2668757A | Method of preparing nonaqueous carbon dispersions | Expired / Lapsed | 1949-08-31 | 1954-02-09 | 2 | Details |
| US2668162A | Preparation of high molecular weight polyhydroxyacetic ester | Expired / Lapsed | 1952-03-20 | 1954-02-02 | 2 | Details |
| US2668157A | Abrasion resistant wire enamels | Expired / Lapsed | 1951-03-15 | 1954-02-02 | 2 | Details |
| US2667706A | Solids-gas contacting | Expired / Lapsed | 1950-09-09 | 1954-02-02 | 2 | Details |
| US2667964A | Yarn handling device | Expired / Lapsed | 1949-04-21 | 1954-02-02 | 0 | Details |
| US2664378A | Manufacture of articles from polyethylene films | Expired / Lapsed | 1950-05-29 | 1953-12-29 | 2 | Details |
| US2663612A | Process for coloring hydrophobic fiber | Expired / Lapsed | 1950-05-10 | 1953-12-22 | 2 | Details |
| US2662065A | Process for obtaining dispersions of polyfluorethylenes | Expired / Lapsed | 1951-05-10 | 1953-12-08 | 2 | Details |
| US2658055A | Orientable condensation polymers of hydroxypivalic acid and… | Expired / Lapsed | 1951-08-24 | 1953-11-03 | 2 | Details |
| US2657149A | Method of esterifying the surface of a silica substrate hav… | Expired / Lapsed | 1952-10-21 | 1953-10-27 | 2 | Details |
| US2657189A | Dilute alkali dispersible hot melt bookbinding adhesives | Expired / Lapsed | 1949-12-08 | 1953-10-27 | 2 | Details |
| US2657201A | Controlled, heterogeneous hydrolysis of polymeric esters | Expired / Lapsed | 1949-11-25 | 1953-10-27 | 2 | Details |
| US2655445A | 3-(halophenyl)-1-methyl-1-(methyl or ethyl) ureas and herbi… | Expired / Lapsed | 1952-02-14 | 1953-10-13 | 1 | Details |
| US2655489A | Coating compositions comprising polyethylene and alkyl poly… | Expired / Lapsed | 1951-09-19 | 1953-10-13 | 1 | Details |
| US2654731A | Polymerization control of acrylonitrile | Expired / Lapsed | 1951-01-19 | 1953-10-06 | 2 | Details |
| US2653113A | Sizing of ethylene polymer structures | Expired / Lapsed | 1951-09-13 | 1953-09-22 | 1 | Details |
| US2653074A | Dyeing of polyacrylonitrile fibers | Expired / Lapsed | 1951-05-24 | 1953-09-22 | 2 | Details |
| US2653146A | Treatment of beta-methylene-betapropiolactone copolymers | Expired / Lapsed | 1950-12-07 | 1953-09-22 | 2 | Details |
| US2650213A | Production of polyethylene terephthalate | Expired / Lapsed | 1951-07-24 | 1953-08-25 | 2 | Details |
| US2649622A | Process for molding synthetic linear polyesters | Expired / Lapsed | 1949-12-20 | 1953-08-25 | 2 | Details |
| US2647885A | Production of polyethylene terephthalate using antimony tri… | Expired / Lapsed | 1951-09-28 | 1953-08-04 | 2 | Details |
| US2647105A | Process of polymerizing epsiloncaprolactam | Expired / Lapsed | 1951-09-26 | 1953-07-28 | 2 | Details |
| US2647104A | Linear polyester composition | Expired / Lapsed | 1951-07-30 | 1953-07-28 | 2 | Details |
| US2647080A | Light-stabilized photopolymerization of acrylic esters | Expired / Lapsed | 1950-06-30 | 1953-07-28 | 1 | Details |
| US2647146A | Process for the preparation of diprimary diamines | Expired / Lapsed | 1949-07-01 | 1953-07-28 | 2 | Details |
| US2646422A | Cured chlorosulfonated interpolymers of the diolefins | Expired / Lapsed | 1951-03-16 | 1953-07-21 | 2 | Details |
| US2644802A | Tetrafluoroethylene polymer compositions containing polyorg… | Expired / Lapsed | 1950-06-30 | 1953-07-07 | 2 | Details |
| US2643250A | Isocyanate dimers as color forming intermediates | Expired / Lapsed | 1951-11-16 | 1953-06-23 | 2 | Details |
| US2641584A | Adhesive compositions, including an amylaceous material and… | Expired / Lapsed | 1951-10-26 | 1953-06-09 | 2 | Details |
| US2641592A | Production of polyethylene terephthalate with cobaltous ace… | Expired / Lapsed | 1951-07-24 | 1953-06-09 | 2 | Details |
| US2641579A | Azeotropic refrigerant composition of monochlorodifluoromet… | Expired / Lapsed | 1951-03-02 | 1953-06-09 | 2 | Details |
| US2639808A | Packaging of tacky materials | Expired / Lapsed | 1947-03-13 | 1953-05-26 | 0 | Details |
| US2636879A | Manufacture of cellulose ethers | Expired / Lapsed | 1950-04-27 | 1953-04-28 | 2 | Details |
| US2636873A | Blends of polyamides and polymeric polyamines | Expired / Lapsed | 1949-08-13 | 1953-04-28 | 2 | Details |
| US2634260A | Metal molybdite catalyzed polymerization | Expired / Lapsed | 1949-11-18 | 1953-04-07 | 2 | Details |
| US2630446A | Polymeric silicates | Expired / Lapsed | 1948-08-04 | 1953-03-03 | 2 | Details |
| US2628223A | Polymerization of acrylonitrile to polymers of controlled m… | Expired / Lapsed | 1949-02-09 | 1953-02-10 | 2 | Details |
| US2621391A | Yarn feeding and tensioning device and process | Expired / Lapsed | 1949-10-20 | 1952-12-16 | 0 | Details |
| US2621193A | Polymeric titanium compounds | Expired / Lapsed | 1950-06-27 | 1952-12-09 | 1 | Details |
| US2621121A | Production of titanium metal | Expired / Lapsed | 1949-09-27 | 1952-12-09 | 2 | Details |
| US2615006A | Pigmentary materials | Expired / Lapsed | 1948-04-05 | 1952-10-21 | 2 | Details |
| US2614028A | Method of superheating titanium tetrachloride | Expired / Lapsed | 1947-07-16 | 1952-10-14 | 0 | Details |
| US2613193A | Sprayable polytetrafluoroethylene aqueous suspensoids conta… | Expired / Lapsed | 1950-01-10 | 1952-10-07 | 2 | Details |
| US2612814A | Differential refractometer | Expired / Lapsed | 1948-05-26 | 1952-10-07 | 0 | Details |
| CA486628A | Polytetrafluoroethylene organosols | Expired / Lapsed | — | 1952-09-16 | 0 | Details |
| US2610360A | Water-resistant polyvinyl alcohol filament and process for … | Expired / Lapsed | 1950-04-22 | 1952-09-16 | 2 | Details |
| US2610359A | Process for producing polyvinyl alcohol filaments of improv… | Expired / Lapsed | 1950-04-22 | 1952-09-16 | 2 | Details |
| US2607674A | Production of metals | Expired / Lapsed | 1949-05-25 | 1952-08-19 | 2 | Details |
| US2607751A | Acrylonitrile polymer dissolved in a dicarboxylic acid anhy… | Expired / Lapsed | 1948-03-02 | 1952-08-19 | 2 | Details |
| US2606928A | Preparation of amino alicyclic compounds | Expired / Lapsed | 1947-11-18 | 1952-08-12 | 1 | Details |
| US2604667A | Yarn process | Expired / Lapsed | 1950-08-23 | 1952-07-29 | 2 | Details |
| US2604689A | Melt spinning process and fiber | Expired / Lapsed | 1950-08-23 | 1952-07-29 | 2 | Details |
| US2599640A | Copolymers of chlorotrifluoroethylene, an olefinic hydrocar… | Expired / Lapsed | 1944-08-04 | 1952-06-10 | 2 | Details |
| US2597872A | Aqueous dispersions of water-insoluble organic polymers con… | Expired / Lapsed | 1950-07-03 | 1952-05-27 | 2 | Details |
| US2597702A | Fluoroalkylphosphoric compounds | Expired / Lapsed | 1950-06-29 | 1952-05-20 | 2 | Details |
| US2595977A | Stabilizing wool against shrinkage | Expired / Lapsed | 1949-08-02 | 1952-05-06 | 2 | Details |
| US2592147A | Codispersions of polytetrafluoroethylene and hydrous oxides | Expired / Lapsed | 1947-05-23 | 1952-04-08 | 2 | Details |
| US2590833A | Process for producing alumina hydrate sols | Expired / Lapsed | 1948-05-20 | 1952-04-01 | 2 | Details |
| US2590518A | Kinetic stop motion device | Expired / Lapsed | 1948-04-02 | 1952-03-25 | 0 | Details |
| CA481508A | Treatment of polymeric materials | Expired / Lapsed | — | 1952-03-04 | 0 | Details |
| US2586995A | Polyfurcate azonitriles | Expired / Lapsed | 1948-01-15 | 1952-02-26 | 1 | Details |
| US2586357A | Tetrafluoroethylene polymer compositions | Expired / Lapsed | 1950-06-30 | 1952-02-19 | 2 | Details |
| US2584968A | Copolymers of methacrylanilide with higher alkyl acrylic es… | Expired / Lapsed | 1950-06-24 | 1952-02-12 | 2 | Details |
| US2585499A | Production of shaped articles from acrylonitrile polymers | Expired / Lapsed | 1948-07-29 | 1952-02-12 | 2 | Details |
| US2584784A | Salts of 1-salicylalaminoguanidine | Expired / Lapsed | 1949-05-21 | 1952-02-05 | 1 | Details |
| US2581832A | Heterogeneous, basic hydrolysis of carboxylic acid esters o… | Expired / Lapsed | 1947-09-05 | 1952-01-08 | 2 | Details |
| US2579580A | Cyanoethylation | Expired / Lapsed | 1950-09-18 | 1951-12-25 | 2 | Details |
| US2579563A | Fabric conveying apparatus | Expired / Lapsed | 1947-10-18 | 1951-12-25 | 0 | Details |
| US2578899A | Superstretching polyester structures | Expired / Lapsed | 1949-10-22 | 1951-12-18 | 1 | Details |
| CA479262A | Processes for production of nylon of low thermoextensibility | Expired / Lapsed | — | 1951-12-11 | 0 | Details |
| US2578523A | Polytetrafluoroethylene packing material and process for ma… | Expired / Lapsed | 1950-06-30 | 1951-12-11 | 2 | Details |
| US2578522A | Process of preparing unsupported films of polytetrafluoroet… | Expired / Lapsed | 1949-06-08 | 1951-12-11 | 2 | Details |
| US2574902A | Chemical processes and composition | Expired / Lapsed | 1948-12-15 | 1951-11-13 | 2 | Details |
| US2572300A | Metal molybdites and their preparation | Expired / Lapsed | 1949-08-23 | 1951-10-23 | 2 | Details |
| US2570478A | Vinylidene chloride interpolymer as a coating for regenerat… | Expired / Lapsed | 1948-07-20 | 1951-10-09 | 2 | Details |
| US2570856A | Process for obtaining pigmented films | Expired / Lapsed | 1947-03-25 | 1951-10-09 | 2 | Details |
| US2570094A | Alkylolamine and morpholine salts of polymerized olefin sul… | Expired / Lapsed | 1950-03-28 | 1951-10-02 | 1 | Details |
| US2569920A | Coating compositions and processes of applying same to glass | Expired / Lapsed | 1949-04-21 | 1951-10-02 | 2 | Details |
| US2569511A | Blasting device | Expired / Lapsed | 1948-12-22 | 1951-10-02 | 0 | Details |
| US2568920A | Apparatus for treating shaped articles with fluids | Expired / Lapsed | 1949-04-21 | 1951-09-25 | 0 | Details |
| US2567162A | Coated electrical conductor and method of making same | Expired / Lapsed | 1948-01-14 | 1951-09-04 | 2 | Details |
| US2566982A | Process for manufacturing embossed vinyl resin film | Expired / Lapsed | 1946-08-01 | 1951-09-04 | 2 | Details |
| US2563835A | Food antioxidants | Expired / Lapsed | 1949-04-01 | 1951-08-14 | 2 | Details |
| US2562897A | Copolymers of vinyl chloride, allyl glycidyl ether, and all… | Expired / Lapsed | 1950-05-06 | 1951-08-07 | 2 | Details |
| US2562118A | Polytetrafluoroethylene coating compositions | Expired / Lapsed | 1950-02-09 | 1951-07-24 | 2 | Details |
| US2560694A | Bromate ion-sulfoxy compound catalyst system in aqueous pol… | Expired / Lapsed | 1950-07-15 | 1951-07-17 | 2 | Details |
| US2561215A | Laminated products and adhesive compositions of matter | Expired / Lapsed | 1945-11-01 | 1951-07-17 | 2 | Details |
| US2559752A | Aqueous colloidal dispersions of polymers | Expired / Lapsed | 1951-03-06 | 1951-07-10 | 2 | Details |
| US2559750A | Aqueous colloidal dispersions of polytetrafluoroethylene an… | Expired / Lapsed | 1949-07-27 | 1951-07-10 | 1 | Details |
| US2558634A | Paper impregnating or saturating composition | Expired / Lapsed | 1949-02-09 | 1951-06-26 | 1 | Details |
| US2557266A | Reaction product of an acrylic acid resin and a resin conta… | Expired / Lapsed | 1944-05-20 | 1951-06-19 | 2 | Details |
| US2556726A | Copper-phthalocyanine in pigmentary beta form and a process… | Expired / Lapsed | 1949-03-05 | 1951-06-12 | 2 | Details |
| US2556295A | Process of drawing formed structures of synthetic linear po… | Expired / Lapsed | 1947-07-23 | 1951-06-12 | 2 | Details |
| US2556885A | Coated products | Expired / Lapsed | 1946-06-27 | 1951-06-12 | 1 | Details |
| US2550808A | Coagulating bath circulating eductor | Expired / Lapsed | 1949-10-25 | 1951-05-01 | 0 | Details |
| US2551281A | Automatic gas analyzer | Expired / Lapsed | 1944-11-29 | 1951-05-01 | 2 | Details |
| US2550503A | Granular polyvinyl resins | Expired / Lapsed | 1947-07-01 | 1951-04-24 | 2 | Details |
| US2549935A | Polymers of hexafluoropropene | Expired / Lapsed | 1946-06-18 | 1951-04-24 | 2 | Details |
| US2549220A | Coated wrapping tissue and process of making same | Expired / Lapsed | 1948-02-13 | 1951-04-17 | 1 | Details |
| US2546238A | Inhibition of acrylonitrile polymerization | Expired / Lapsed | 1947-02-18 | 1951-03-27 | 2 | Details |
| US2544667A | Werner-type chromium compounds as laminating and coating co… | Expired / Lapsed | 1946-04-27 | 1951-03-13 | 2 | Details |
| US2544668A | Werner-type chromium compounds | Expired / Lapsed | 1946-04-27 | 1951-03-13 | 2 | Details |
| US2543801A | Process for the preparation of shaped polyvinyl alcohol obj… | Expired / Lapsed | 1948-05-20 | 1951-03-06 | 2 | Details |
| US2543229A | Polythene layer bonded to another layer by ethylene-vinyl a… | Expired / Lapsed | 1948-04-27 | 1951-02-27 | 2 | Details |
| US2539329A | Process of coating an inorganic fabric with polytetrafluoro… | Expired / Lapsed | 1949-04-09 | 1951-01-23 | 2 | Details |
| US2535045A | Spinning of viscose | Expired / Lapsed | 1947-04-26 | 1950-12-26 | 2 | Details |
| US2535006A | 2-oxo-5-cyano-4-imidazolinecarbonamide, salts thereof, and … | Expired / Lapsed | 1950-04-05 | 1950-12-19 | 2 | Details |
| US2534326A | Process of manufacturing photographic elements | Expired / Lapsed | 1946-11-27 | 1950-12-19 | 2 | Details |
| US2534058A | Polymerization of tetrafluoroethylene with dibasic acid per… | Expired / Lapsed | 1946-11-30 | 1950-12-12 | 2 | Details |
| US2533013A | Method and apparatus for the twostage draw of synthetic fun… | Expired / Lapsed | 1949-04-27 | 1950-12-05 | 0 | Details |
| US2532277A | 1, 6 hexanediamine derivatives | Expired / Lapsed | 1948-05-21 | 1950-12-05 | 4 | Details |
| US2530962A | Formation of shaped articles from acrylonitrile polymers | Expired / Lapsed | 1948-09-24 | 1950-11-21 | 1 | Details |
| US2530366A | Electrophoretic deposition of ethylene polymers | Expired / Lapsed | 1947-01-08 | 1950-11-21 | 2 | Details |
| US2528523A | Process for extruding and insolubilizing polymers of ethyle… | Expired / Lapsed | 1948-06-12 | 1950-11-07 | 2 | Details |
| US2527806A | Dicarboxylic acid anhydride-4-vinylcyclohexene diepoxide re… | Expired / Lapsed | 1948-02-10 | 1950-10-31 | 2 | Details |
| US2526728A | Glass laminations and interlayers therefor | Expired / Lapsed | 1948-08-19 | 1950-10-24 | 2 | Details |
| US2525671A | Carnauba wax as slip agent for vinylidene chloride-acryloni… | Expired / Lapsed | 1946-11-29 | 1950-10-10 | 2 | Details |
| US2525049A | Cellulose titanate film production | Expired / Lapsed | 1946-08-22 | 1950-10-10 | 1 | Details |
| US2524432A | Esters of epoxy alcohols with propenoic compounds | Expired / Lapsed | 1945-08-17 | 1950-10-03 | 1 | Details |
| US2520173A | Process for preparing unsupported films of tetrafluoroethyl… | Expired / Lapsed | 1948-01-14 | 1950-08-29 | 2 | Details |
| US2519755A | Thiodipropionates-polythene antioxidants | Expired / Lapsed | 1946-09-25 | 1950-08-22 | 1 | Details |
| US2516562A | Process of making artificial wool from nylon fibers | Expired / Lapsed | 1946-12-03 | 1950-07-25 | 2 | Details |
| US2516064A | Polymerization in the presence of cobalt salts | Expired / Lapsed | 1946-08-07 | 1950-07-18 | 1 | Details |
| US2513312A | Copolymer of vinyl fluoride and chlorotrifluoroethylene | Expired / Lapsed | 1944-06-08 | 1950-07-04 | 2 | Details |
| US2512058A | Titanated organo-silicon-oxy compounds | Expired / Lapsed | 1948-04-05 | 1950-06-20 | 1 | Details |
| US2512463A | Cellular plastic products and method of making | Expired / Lapsed | 1946-05-28 | 1950-06-20 | 2 | Details |
| US2510078A | Plasticized polymers | Expired / Lapsed | 1948-07-08 | 1950-06-06 | 2 | Details |
| US2509857A | Compatibilized resin compositions | Expired / Lapsed | 1945-07-09 | 1950-05-30 | 2 | Details |
| US2509741A | Production of filamentous structures | Expired / Lapsed | 1944-10-27 | 1950-05-30 | 2 | Details |
| US2503252A | Halogenation of polymers | Expired / Lapsed | 1947-06-27 | 1950-04-11 | 1 | Details |
| US2497526A | Process of treating a polymeric nitrile with hydrazine | Expired / Lapsed | 1948-02-26 | 1950-02-14 | 2 | Details |
| US2497705A | Copolymerization product of n-vinyl lactams and polymerizab… | Expired / Lapsed | 1946-10-16 | 1950-02-14 | 2 | Details |
| US2497320A | Stabilized milk products | Expired / Lapsed | 1946-02-12 | 1950-02-14 | 2 | Details |
| US2495918A | Poly-n-vinyl lactam photographic silver halide emulsions | Expired / Lapsed | 1948-08-28 | 1950-01-31 | 2 | Details |
| US2491471A | Acrylonitrile-vinylpyridine copolymers | Expired / Lapsed | 1948-02-25 | 1949-12-20 | 0 | Details |
| US2491923A | Stratified polyvinyl chloride films and processes of making… | Expired / Lapsed | 1946-07-02 | 1949-12-20 | 0 | Details |
| US2491732A | Method of vaporizing hydrogen peroxide | Expired / Lapsed | 1946-05-17 | 1949-12-20 | 0 | Details |
| US2491920A | Diesters of 1-ketophosphonic acids | Expired / Lapsed | 1946-05-16 | 1949-12-20 | 0 | Details |
| US2491642A | Polyvinyl alcohol casting solution | Expired / Lapsed | 1944-09-02 | 1949-12-20 | 0 | Details |
| US2491931A | Rivet heating device | Expired / Lapsed | 1943-12-01 | 1949-12-20 | 0 | Details |
| US2491023A | Photographic film elements | Expired / Lapsed | 1945-09-12 | 1949-12-13 | 0 | Details |
| US2490550A | Moistureproof heat sealing composition | Expired / Lapsed | 1947-08-13 | 1949-12-06 | 0 | Details |
| US2490677A | Aqueous dispersion of a salt of an n-monoalkyl substituted … | Expired / Lapsed | 1946-04-19 | 1949-12-06 | 0 | Details |
| US2489651A | Production of organic titanium compounds | Expired / Lapsed | 1946-06-25 | 1949-11-29 | 0 | Details |
| US2487333A | Alkali metal dispersions and the method of preparing the sa… | Expired / Lapsed | 1947-08-08 | 1949-11-08 | 0 | Details |
| US2487448A | Polyvinyl alcohol-starch-clay adhesives, processes, and pro… | Expired / Lapsed | 1944-03-01 | 1949-11-08 | 0 | Details |
| US2485691A | Production of extruded polytetrafluoroethylene articles | Expired / Lapsed | 1948-02-20 | 1949-10-25 | 0 | Details |
| US2486241A | Method for preparing polymers and copolymers of acrylic aci… | Expired / Lapsed | 1942-09-17 | 1949-10-25 | 0 | Details |
| US2485141A | Aqueous emulsion polymerization of vinyl acetate | Expired / Lapsed | 1946-01-16 | 1949-10-18 | 0 | Details |
| US2485239A | Polymers containing recurring aldehyde groups and derivativ… | Expired / Lapsed | 1945-03-06 | 1949-10-18 | 0 | Details |
| US2484484A | Process for obtaining laminated products | Expired / Lapsed | 1948-07-06 | 1949-10-11 | 0 | Details |
| US2484530A | Copolymers of 3, 3, 3-trifluoropropene | Expired / Lapsed | 1948-05-24 | 1949-10-11 | 0 | Details |
| US2484483A | Polytetrafluoroethylene dispersions | Expired / Lapsed | 1945-07-26 | 1949-10-11 | 0 | Details |
| US2482038A | Vinyl chloride-containing polymers having a high stability … | Expired / Lapsed | 1947-03-11 | 1949-09-13 | 0 | Details |
| US2480775A | Dyeing nylon hosiery | Expired / Lapsed | 1948-07-03 | 1949-08-30 | 0 | Details |
| US2480296A | Ethylene polymer compositions | Expired / Lapsed | 1947-02-18 | 1949-08-30 | 0 | Details |
| US2480295A | Adhesive compositions | Expired / Lapsed | 1946-02-09 | 1949-08-30 | 0 | Details |
| US2479367A | Process for the preparation of fluoroethylene interpolymers | Expired / Lapsed | 1945-04-21 | 1949-08-16 | 0 | Details |
| US2478415A | Blasting initiator | Expired / Lapsed | 1948-05-22 | 1949-08-09 | 0 | Details |
| US2477156A | Treatment of synthetic linear polyamide threads | Expired / Lapsed | 1946-04-12 | 1949-07-26 | 0 | Details |
| US2477336A | Coated cotton fabric | Expired / Lapsed | 1944-07-14 | 1949-07-26 | 0 | Details |
| US2476307A | Water-soluble esters of alkyl siliconic acids | Expired / Lapsed | 1946-10-02 | 1949-07-19 | 0 | Details |
| US2476606A | Stabilized vinyl fluoride polymers | Expired / Lapsed | 1945-07-04 | 1949-07-19 | 0 | Details |
| US2475610A | Trioxepane and its polymers | Expired / Lapsed | 1945-12-19 | 1949-07-12 | 0 | Details |
| US2474912A | Drawtwister | Expired / Lapsed | 1946-03-16 | 1949-07-05 | 0 | Details |
| US2474906A | Polarized light system for determining variations in the wi… | Expired / Lapsed | 1945-08-03 | 1949-07-05 | 0 | Details |
| US2473997A | Partial reduction of polycyclic aromatic hydrocarbons | Expired / Lapsed | 1947-06-26 | 1949-06-21 | 0 | Details |
| US2469437A | Quinone-resorcinol tanning agent and process | Expired / Lapsed | 1946-04-23 | 1949-05-10 | 0 | Details |
| US2468094A | Casting compositions comprising methyl methacrylate and gly… | Expired / Lapsed | 1947-05-10 | 1949-04-26 | 0 | Details |
| US2468664A | Tetrafluoroethylene copolymers | Expired / Lapsed | 1945-08-28 | 1949-04-26 | 0 | Details |
| US2467769A | Removal of volatile substances from aqueous dispersions of … | Expired / Lapsed | 1946-06-22 | 1949-04-19 | 0 | Details |
| US2467430A | Acrolein acetal polymers | Expired / Lapsed | 1945-03-06 | 1949-04-19 | 0 | Details |
| US2467774A | Process of hydrolyzing vinyl ester polymers | Expired / Lapsed | 1945-02-16 | 1949-04-19 | 0 | Details |
| US2467436A | Plasticized hydroxylated polymeric film and method of makin… | Expired / Lapsed | 1943-12-18 | 1949-04-19 | 0 | Details |
| US2467192A | Coating compositions | Expired / Lapsed | 1946-04-05 | 1949-04-12 | 0 | Details |
| US2467186A | Aqueous dispersions of synthetic linear polyamide and proce… | Expired / Lapsed | 1945-04-20 | 1949-04-12 | 0 | Details |
| US2467234A | Preparation of olefine polymers | Expired / Lapsed | 1943-09-01 | 1949-04-12 | 0 | Details |
| US2465319A | Polymeric linear terephthalic esters | Expired / Lapsed | 1945-09-24 | 1949-03-22 | 0 | Details |
| US2463396A | Distillation of titanium tetrachloride | Expired / Lapsed | 1946-06-26 | 1949-03-01 | 0 | Details |
| US2462927A | Artificial filaments and yarn | Expired / Lapsed | 1943-11-06 | 1949-03-01 | 0 | Details |
| US2462400A | Copolymers of dihydrodicyclopentadienyl methacrylate with e… | Expired / Lapsed | 1946-07-17 | 1949-02-22 | 0 | Details |
| US2462185A | Moistureproof, heat-sealable wrapping material and process | Expired / Lapsed | 1946-02-19 | 1949-02-22 | 0 | Details |
| US2462354A | Organic compound polymerization process | Expired / Lapsed | 1942-09-17 | 1949-02-22 | 0 | Details |
| US2462422A | Process for polymerizing vinyl halides | Expired / Lapsed | 1942-09-17 | 1949-02-22 | 0 | Details |
| US2459874A | Coating composition and sheets coated therewith | Expired / Lapsed | 1947-03-14 | 1949-01-25 | 0 | Details |
| US2460206A | Method of continuous dyeing | Expired / Lapsed | 1945-12-07 | 1949-01-25 | 0 | Details |
| US2457158A | Vitreous bonding compositions | Expired / Lapsed | 1947-07-23 | 1948-12-28 | 0 | Details |
| US2456621A | Method of extruding polytetrafluoroethylene and coating art… | Expired / Lapsed | 1946-08-17 | 1948-12-21 | 0 | Details |
| US2455912A | Polymerized tetramethylethylene oxide | Expired / Lapsed | 1947-08-11 | 1948-12-14 | 0 | Details |
| US2456262A | Fabrication of polytetrafluoroethylene articles | Expired / Lapsed | 1946-03-29 | 1948-12-14 | 0 | Details |
| US2456255A | Polymers of trifluoroethylene and process for obtaining them | Expired / Lapsed | 1944-09-19 | 1948-12-14 | 0 | Details |
| US2456360A | Acrylonitrile process | Expired / Lapsed | 1944-08-09 | 1948-12-14 | 0 | Details |
| US2454078A | Methylol melamine ethers and their manufacture | Expired / Lapsed | 1941-04-09 | 1948-11-16 | 0 | Details |
| US2453052A | Stain resistant plasticized polyvinyl chloride resin coatin… | Expired / Lapsed | 1946-07-03 | 1948-11-02 | 0 | Details |
| US2451672A | Alcohol insoluble nitrogen substituted polyamides | Expired / Lapsed | 1944-12-08 | 1948-10-19 | 0 | Details |
| US2451370A | Long-chain secondary alkyl n-substituted polymeric styrene/… | Expired / Lapsed | 1946-04-30 | 1948-10-12 | 0 | Details |
| US2449613A | Reactions of inorganic polyisocyanates and polyisothiocyana… | Expired / Lapsed | 1943-06-17 | 1948-09-21 | 0 | Details |
| US2449489A | Preparation of polymeric ethylene emulsions | Expired / Lapsed | 1947-07-03 | 1948-09-14 | 0 | Details |
| US2449180A | Composition of phenol-rubber and resorcinol-formaldehyde | Expired / Lapsed | 1945-06-21 | 1948-09-14 | 0 | Details |
| US2448828A | Photopolymerization | Expired / Lapsed | 1946-09-04 | 1948-09-07 | 0 | Details |
| US2448952A | Method for obtaining dispersions of polytetrafluoroethylene… | Expired / Lapsed | 1945-07-26 | 1948-09-07 | 0 | Details |
| US2448666A | Polyethylene-polyvinyl acetal composition | Expired / Lapsed | 1944-06-14 | 1948-09-07 | 0 | Details |
| US2445042A | Method of treating oriented acrylonitrile structures | Expired / Lapsed | 1943-07-28 | 1948-07-13 | 0 | Details |
| US2444536A | Synthesis of nu-aryl-maleimides | Expired / Lapsed | 1946-05-14 | 1948-07-06 | 0 | Details |
| US2444712A | Light polarizing polyvinyl orthoborate films | Expired / Lapsed | 1945-07-06 | 1948-07-06 | 0 | Details |
| US2443420A | Synthesis of nitriles | Expired / Lapsed | 1946-02-21 | 1948-06-15 | 0 | Details |
| US2443450A | Article coated with nu-alkoxymethyl polyamide and process o… | Expired / Lapsed | 1943-07-01 | 1948-06-15 | 0 | Details |
| US2441066A | Process for obtaining polymeric silicon compounds | Expired / Lapsed | 1945-07-23 | 1948-05-04 | 0 | Details |
| US2441085A | Process of making nylon fabrics elastic by treatment with f… | Expired / Lapsed | 1945-02-20 | 1948-05-04 | 0 | Details |
| US2440190A | Preparation of nonporous polytetrafluoroethylene articles | Expired / Lapsed | 1944-03-01 | 1948-04-20 | 0 | Details |
| US2439514A | Composite structures | Expired / Lapsed | 1941-07-23 | 1948-04-13 | 0 | Details |
| US2436926A | Polymerization of acrylic acid nitriles | Expired / Lapsed | 1943-08-02 | 1948-03-02 | 0 | Details |
| US2436596A | Adhesive and method of making the same | Expired / Lapsed | 1942-08-22 | 1948-02-24 | 0 | Details |
| US2436222A | Adhesive cement compositions | Expired / Lapsed | 1943-11-23 | 1948-02-17 | 0 | Details |
| US2436201A | Production of strain-free, extruded shapes from organic the… | Expired / Lapsed | 1943-06-26 | 1948-02-17 | 0 | Details |
| US2436080A | Resinous composition of urea-aldehyde and hydrolyzed interp… | Expired / Lapsed | 1943-05-17 | 1948-02-17 | 0 | Details |
| US2434079A | Dielectric material and method of making same | Expired / Lapsed | 1945-04-27 | 1948-01-06 | 0 | Details |
| US2433844A | Organic fluoroethers and their preparation | Expired / Lapsed | 1943-04-23 | 1948-01-06 | 0 | Details |
| US2434191A | Removing organic impurities from copper-cyanide electroplat… | Expired / Lapsed | 1942-02-02 | 1948-01-06 | 0 | Details |
| US2432242A | Calendered sheet comprising the reaction product of a polyv… | Expired / Lapsed | 1943-02-20 | 1947-12-09 | 0 | Details |
| US2431956A | Dyeing articles composed of acrylonitrile polymers | Expired / Lapsed | 1945-05-04 | 1947-12-02 | 0 | Details |
| US2431001A | Coated fabric | Expired / Lapsed | 1945-04-27 | 1947-11-18 | 0 | Details |
| US2430860A | Polyamide-formaldehyde reactions and products thereof | Expired / Lapsed | 1944-06-07 | 1947-11-18 | 0 | Details |
| US2430479A | Bonding of laminates by means of isocyanates | Expired / Lapsed | 1941-07-23 | 1947-11-11 | 0 | Details |
| US2430273A | Tool for lining pipe | Expired / Lapsed | 1945-11-14 | 1947-11-04 | 0 | Details |
| US2430233A | Halogen-yielding compositions | Expired / Lapsed | 1944-06-05 | 1947-11-04 | 0 | Details |
| US2429861A | Coating compositions of polyethylene and process for applyi… | Expired / Lapsed | 1945-04-03 | 1947-10-28 | 0 | Details |
| US2428704A | Yarn-advancing reel | Expired / Lapsed | 1945-12-07 | 1947-10-07 | 0 | Details |
| US2427183A | Electrical insulation | Expired / Lapsed | 1943-10-25 | 1947-09-09 | 0 | Details |
| US2427280A | Nickel electroplating composition | Expired / Lapsed | 1941-02-11 | 1947-09-09 | 0 | Details |
| US2425349A | Laminated structures | Expired / Lapsed | 1943-09-28 | 1947-08-12 | 0 | Details |
| US2425348A | Mixture of cyclized rubber and resorcinol-formaldehyde resol | Expired / Lapsed | 1943-09-09 | 1947-08-12 | 0 | Details |
| US2423565A | Polyvinyl acetal resin compositions | Expired / Lapsed | 1942-09-24 | 1947-07-08 | 0 | Details |
| US2423318A | Vinyl cyanide from acetylene and hcn | Expired / Lapsed | 1945-05-30 | 1947-07-01 | 0 | Details |
| US2422722A | Extrusion apparatus | Expired / Lapsed | 1946-03-05 | 1947-06-24 | 0 | Details |
| US2422271A | Polyisocyanate modified polyesteramides | Expired / Lapsed | 1943-12-17 | 1947-06-17 | 0 | Details |
| US2419880A | Polyvinyl resin adhesive composition, plywood, and method o… | Expired / Lapsed | 1943-07-10 | 1947-04-29 | 0 | Details |
| US2419922A | Method of producing reinforcing elements | Expired / Lapsed | 1943-07-02 | 1947-04-29 | 0 | Details |
| US2419281A | Polyvinyl alcohol film | Expired / Lapsed | 1944-12-12 | 1947-04-22 | 0 | Details |
| US2419010A | Polyvinyl fluoride | Expired / Lapsed | 1943-11-19 | 1947-04-15 | 0 | Details |
| US2419035A | Manufacture of molding powders | Expired / Lapsed | 1942-07-25 | 1947-04-15 | 0 | Details |
| US2418479A | Process for orienting ferromagnetic flakes in paint films | Expired / Lapsed | 1944-02-16 | 1947-04-08 | 0 | Details |
| US2418018A | Methyl methacrylate polymer laminated to a polyvinyl butyra… | Expired / Lapsed | 1943-04-22 | 1947-03-25 | 0 | Details |
| US2417488A | Machine for testing and assorting resistance elements | Expired / Lapsed | 1942-06-13 | 1947-03-18 | 0 | Details |
| US2417068A | Catalytic synthesis of vinyl cyanide | Expired / Lapsed | 1944-09-27 | 1947-03-11 | 0 | Details |
| US2416447A | Weather resistant flameproof paper | Expired / Lapsed | 1943-07-27 | 1947-02-25 | 0 | Details |
| US2416390A | Free fall fiber | Expired / Lapsed | 1943-02-25 | 1947-02-25 | 0 | Details |
| US2416061A | Curing of polymers of substituted monoolefinic hydrocarbons… | Expired / Lapsed | 1943-10-27 | 1947-02-18 | 0 | Details |
| US2416069A | Vulcanization of halogenated polymers of ethylene | Expired / Lapsed | 1943-08-20 | 1947-02-18 | 0 | Details |
| US2415382A | Photographic elements including hydrophilic color formers | Expired / Lapsed | 1944-03-31 | 1947-02-04 | 0 | Details |
| US2414144A | Sulfur-modified unsaturated cellulose ether and process of … | Expired / Lapsed | 1943-12-14 | 1947-01-14 | 0 | Details |
| US2413789A | Treatment of polyvinyl alcohol articles and products | Expired / Lapsed | 1943-06-18 | 1947-01-07 | 0 | Details |
| US2413973A | Photopolymerization of vinyl and vinylidene compounds | Expired / Lapsed | 1942-10-21 | 1947-01-07 | 0 | Details |
| US2413073A | Stretching rolls | Expired / Lapsed | 1945-07-26 | 1946-12-24 | 0 | Details |
| US2412993A | Polymeric materials | Expired / Lapsed | 1943-07-19 | 1946-12-24 | 0 | Details |
| US2412969A | Spinning process | Expired / Lapsed | 1943-04-27 | 1946-12-24 | 0 | Details |
| US2411954A | Treatment of polyunsaturated esters with polythiols and pro… | Expired / Lapsed | 1944-01-25 | 1946-12-03 | 0 | Details |
| US2412148A | Fuel barrier | Expired / Lapsed | 1942-09-21 | 1946-12-03 | 0 | Details |
| US2411159A | Lubricant | Expired / Lapsed | 1943-07-22 | 1946-11-19 | 0 | Details |
| US2410844A | Metal plating process | Expired / Lapsed | 1942-01-14 | 1946-11-12 | 0 | Details |
| US2410225A | Coating by flame-spraying method | Expired / Lapsed | 1942-06-17 | 1946-10-29 | 0 | Details |
| US2410047A | Method of explosively blasting joints | Expired / Lapsed | 1942-01-09 | 1946-10-29 | 0 | Details |
| US2409996A | Ethylene polymerization | Expired / Lapsed | 1944-05-27 | 1946-10-22 | 0 | Details |
| US2409749A | Indicating system | Expired / Lapsed | 1943-11-20 | 1946-10-22 | 0 | Details |
| US2408656A | Process for producing silicic acid sols | Expired / Lapsed | 1943-04-27 | 1946-10-01 | 0 | Details |
| US2408654A | Silicic acid sols | Expired / Lapsed | 1942-04-18 | 1946-10-01 | 0 | Details |
| US2407181A | Artificial waxes and greases | Expired / Lapsed | 1944-03-30 | 1946-09-03 | 0 | Details |
| US2406905A | Method for producing cellulosic structures | Expired / Lapsed | 1941-05-06 | 1946-09-03 | 0 | Details |
| US2406039A | Coated metal article | Expired / Lapsed | 1942-12-04 | 1946-08-20 | 0 | Details |
| US2405965A | Polyamide emulsions | Expired / Lapsed | 1942-06-03 | 1946-08-20 | 0 | Details |
| US2405038A | Carburetor diaphragm | Expired / Lapsed | 1943-12-24 | 1946-07-30 | 0 | Details |
| US2404779A | Process for the copolymerization of asymmetrical dihalogena… | Expired / Lapsed | 1941-08-19 | 1946-07-30 | 0 | Details |
| US2404726A | Polymer compositions and their preparation | Expired / Lapsed | 1944-11-18 | 1946-07-23 | 0 | Details |
| US2404724A | Preparing solutions of polymers | Expired / Lapsed | 1944-11-18 | 1946-07-23 | 0 | Details |
| US2404714A | Polymer products | Expired / Lapsed | 1944-11-04 | 1946-07-23 | 0 | Details |
| US2404357A | Coated methyl methacrylate polymer | Expired / Lapsed | 1943-10-25 | 1946-07-23 | 0 | Details |
| US2404713A | Method for preparing polymeric solutions | Expired / Lapsed | 1943-06-23 | 1946-07-23 | 0 | Details |
| US2404374A | Polyfluorinated cycloparaffins and process for producing th… | Expired / Lapsed | 1943-04-23 | 1946-07-23 | 0 | Details |
| US2403476A | Extrusion apparatus | Expired / Lapsed | 1944-08-08 | 1946-07-09 | 0 | Details |
| US2403794A | Visible light transparent plastic | Expired / Lapsed | 1943-11-19 | 1946-07-09 | 0 | Details |
| US2403465A | Treatment of hydroxyl-containing interpolymers of ethylene | Expired / Lapsed | 1942-12-18 | 1946-07-09 | 0 | Details |
| US2403464A | Hydrolyzed vinyl ester interpolymer fibers | Expired / Lapsed | 1942-07-22 | 1946-07-09 | 0 | Details |
| US2403286A | Detonator loading machine | Expired / Lapsed | 1943-12-18 | 1946-07-02 | 0 | Details |
| US2403077A | Laminated structure and method | Expired / Lapsed | 1942-02-06 | 1946-07-02 | 0 | Details |
| US2402683A | Hydrogenation catalysts and methods of preparation | Expired / Lapsed | 1940-02-16 | 1946-06-25 | 0 | Details |
| US2402167A | Physical form of organic pigment | Expired / Lapsed | 1942-12-24 | 1946-06-18 | 0 | Details |
| US2401776A | Resinous reaction products of polyhydric alcohols and alpha… | Expired / Lapsed | 1942-01-05 | 1946-06-11 | 0 | Details |
| US2401291A | Racket string | Expired / Lapsed | 1943-06-11 | 1946-05-28 | 0 | Details |
| US2401236A | Apparatus for producing subdivided molding material | Expired / Lapsed | 1942-10-10 | 1946-05-28 | 0 | Details |
| US2400091A | Molding process | Expired / Lapsed | 1944-09-20 | 1946-05-14 | 0 | Details |
| US2400094A | Molding process | Expired / Lapsed | 1944-03-02 | 1946-05-14 | 0 | Details |
| US2400099A | Process for obtaining shaped articles | Expired / Lapsed | 1943-10-25 | 1946-05-14 | 0 | Details |
| US2399653A | Hydrolyzed polymers | Expired / Lapsed | 1945-02-13 | 1946-05-07 | 0 | Details |
| US2399313A | Process for the manufacture of electrical capacitors | Expired / Lapsed | 1943-10-04 | 1946-04-30 | 0 | Details |
| US2399401A | Polyvinyl alcohol compositions | Expired / Lapsed | 1943-04-21 | 1946-04-30 | 0 | Details |
| US2399456A | Plasticized polyvinyl compositions | Expired / Lapsed | 1943-01-21 | 1946-04-30 | 0 | Details |
| US2399211A | Method of perforating well casings | Expired / Lapsed | 1942-03-19 | 1946-04-30 | 0 | Details |
| US2397960A | Food antioxidants | Expired / Lapsed | 1944-08-28 | 1946-04-09 | 0 | Details |
| US2398176A | Electrical capacitor | Expired / Lapsed | 1943-03-15 | 1946-04-09 | 0 | Details |
| US2397866A | Photographic elements | Expired / Lapsed | 1944-03-31 | 1946-04-02 | 0 | Details |
| US2396713A | Copolymers of halogenated ethylenes | Expired / Lapsed | 1944-06-12 | 1946-03-19 | 0 | Details |
| US2396629A | Fabrication of polytetrafluoroethylene articles | Expired / Lapsed | 1944-03-29 | 1946-03-19 | 0 | Details |
| US2396920A | Ethylene polymerization process | Expired / Lapsed | 1941-04-10 | 1946-03-19 | 0 | Details |
| US2396677A | Process for polymerizing olefinic materials | Expired / Lapsed | 1941-03-15 | 1946-03-19 | 0 | Details |
| US2395450A | Tool | Expired / Lapsed | 1944-12-19 | 1946-02-26 | 0 | Details |
| US2395442A | Electrical capacitor | Expired / Lapsed | 1943-10-15 | 1946-02-26 | 0 | Details |
| US2395419A | Pressure sensitive products | Expired / Lapsed | 1943-05-29 | 1946-02-26 | 0 | Details |
| US2395581A | Modified vinyl chloride-fumaric ester copolymer | Expired / Lapsed | 1942-11-12 | 1946-02-26 | 0 | Details |
| US2395550A | Modified alkyd resins | Expired / Lapsed | 1942-09-30 | 1946-02-26 | 0 | Details |
| US2395489A | Photometric process for gas analysis | Expired / Lapsed | 1942-05-20 | 1946-02-26 | 0 | Details |
| US2395136A | Method and apparatus for yarn processing | Expired / Lapsed | 1942-01-09 | 1946-02-19 | 0 | Details |
| US2394591A | Electrical resistor | Expired / Lapsed | 1944-09-09 | 1946-02-12 | 0 | Details |
| US2394910A | Preparation of polydioxolane | Expired / Lapsed | 1941-05-06 | 1946-02-12 | 0 | Details |
| US2393967A | Process for polymerizing tetrafluoroethylene | Expired / Lapsed | 1942-12-24 | 1946-02-05 | 0 | Details |
| US2394243A | Process for polymerizing tetrafuloroethylene | Expired / Lapsed | 1942-07-23 | 1946-02-05 | 0 | Details |
| US2394291A | Continuous process for preparing dispersions of polymerized… | Expired / Lapsed | 1939-12-09 | 1946-02-05 | 0 | Details |
| US2392842A | Method of making coiled structures | Expired / Lapsed | 1943-06-10 | 1946-01-15 | 0 | Details |
| US2392378A | Copolymers of chlorotrifluoroethylene and olefin hydrocarbo… | Expired / Lapsed | 1943-10-25 | 1946-01-08 | 0 | Details |
| US2392389A | Process for obtaining decolorized polytetrafluoroethylene | Expired / Lapsed | 1943-10-25 | 1946-01-08 | 0 | Details |
| US2392388A | Electrical apparatus | Expired / Lapsed | 1942-11-05 | 1946-01-08 | 0 | Details |
| US2391980A | Annular wick oiler | Expired / Lapsed | 1943-12-01 | 1946-01-01 | 0 | Details |
| US2391986A | Protective sheet for rubber | Expired / Lapsed | 1942-11-17 | 1946-01-01 | 0 | Details |
| US2391920A | Polymerization catalysts | Expired / Lapsed | 1942-11-16 | 1946-01-01 | 0 | Details |
| US2389708A | Coating compositions | Expired / Lapsed | 1942-02-03 | 1945-11-27 | 0 | Details |
| US2389655A | Polyamide articles | Expired / Lapsed | 1941-10-13 | 1945-11-27 | 0 | Details |
| US2389420A | Manufacture of capacttors | Expired / Lapsed | 1943-10-04 | 1945-11-20 | 0 | Details |
| US2389419A | Preparation of electrical capacttors | Expired / Lapsed | 1943-10-04 | 1945-11-20 | 0 | Details |
| US2389210A | Airplane wing or fin with improved airfoil characteristics | Expired / Lapsed | 1942-04-08 | 1945-11-20 | 0 | Details |
| US2389018A | Terminal fastening for electrical capacitors | Expired / Lapsed | 1943-10-04 | 1945-11-13 | 0 | Details |
| US2388325A | Spinning process for artificial filaments | Expired / Lapsed | 1944-03-04 | 1945-11-06 | 0 | Details |
| US2387718A | Extrusion apparatus | Expired / Lapsed | 1942-11-10 | 1945-10-30 | 0 | Details |
| US2387742A | Explosion rivet | Expired / Lapsed | 1942-08-12 | 1945-10-30 | 0 | Details |
| US2387730A | Process for obtaining cork-like products from polymers of e… | Expired / Lapsed | 1942-04-07 | 1945-10-30 | 0 | Details |
| US2387501A | Hydrocarbon oil | Expired / Lapsed | 1944-04-04 | 1945-10-23 | 0 | Details |
| US2387367A | Silicate base adhesive | Expired / Lapsed | 1942-06-30 | 1945-10-23 | 0 | Details |
| US2387512A | Luminescent adhesive tape | Expired / Lapsed | 1942-02-10 | 1945-10-23 | 0 | Details |
| US2386793A | Organic polysilicon esters | Expired / Lapsed | 1940-06-06 | 1945-10-16 | 0 | Details |
| US2386347A | Interpolymers of ethylene with vinyl esters and products th… | Expired / Lapsed | 1945-02-13 | 1945-10-09 | 0 | Details |
| US2386095A | Heating device | Expired / Lapsed | 1944-02-18 | 1945-10-02 | 0 | Details |
| US2385856A | Large rectangular spinneret | Expired / Lapsed | 1943-10-30 | 1945-10-02 | 0 | Details |
| US2385890A | Spinning process | Expired / Lapsed | 1943-03-31 | 1945-10-02 | 0 | Details |
| US2385580A | Vitrifiable flux and bonding composition containing same | Expired / Lapsed | 1944-07-01 | 1945-09-25 | 0 | Details |
| US2384848A | Dispersions of ethlyene polymers | Expired / Lapsed | 1942-08-10 | 1945-09-18 | 0 | Details |
| US2384070A | Milling resins with thiols | Expired / Lapsed | 1940-07-15 | 1945-09-04 | 0 | Details |
| US2383653A | Silicic acid sols | Expired / Lapsed | 1941-06-04 | 1945-08-28 | 0 | Details |
| US2383067A | Luminescent cast synthetic resin articles | Expired / Lapsed | 1942-07-07 | 1945-08-21 | 0 | Details |
| US2383399A | Modified maleic anhydride-terpene reaction products and met… | Expired / Lapsed | 1941-10-06 | 1945-08-21 | 0 | Details |
| US2379824A | Process and apparatus for treating artificial filaments | Expired / Lapsed | 1943-03-06 | 1945-07-03 | 0 | Details |
| US2379821A | Compounds | Expired / Lapsed | 1942-12-30 | 1945-07-03 | 0 | Details |
| US2379297A | Esters of alpha-cyanoalcohols | Expired / Lapsed | 1941-11-26 | 1945-06-26 | 0 | Details |
| US2378629A | Copolymers of maleic anhydride | Expired / Lapsed | 1941-09-10 | 1945-06-19 | 0 | Details |
| US2378048A | Method of making haloacetyl halides | Expired / Lapsed | 1944-04-07 | 1945-06-12 | 0 | Details |
| US2377928A | Stretching cast elongate bodies | Expired / Lapsed | 1942-06-19 | 1945-06-12 | 0 | Details |
| US2377946A | Method of and apparatus for shaping thermoplastic sheets | Expired / Lapsed | 1940-12-27 | 1945-06-12 | 0 | Details |
| US2376891A | Cellulose ester manufacture | Expired / Lapsed | 1942-07-01 | 1945-05-29 | 0 | Details |
| US2375847A | Process for the preparation of cyanoethyl cellulose | Expired / Lapsed | 1942-12-17 | 1945-05-15 | 0 | Details |
| US2375853A | Diamine derivatives | Expired / Lapsed | 1942-10-07 | 1945-05-15 | 0 | Details |
| US2374648A | Condensation products of n,n'-bis (alkoxymethyl) urea and p… | Expired / Lapsed | 1942-11-21 | 1945-05-01 | 0 | Details |
| US2374767A | Grease-resistant film | Expired / Lapsed | 1942-09-02 | 1945-05-01 | 0 | Details |
| US2374088A | Corrosion recorder | Expired / Lapsed | 1941-01-28 | 1945-04-17 | 0 | Details |
| US2374136A | Catalytic reaction of isocyanates with organic compounds | Expired / Lapsed | 1940-11-01 | 1945-04-17 | 0 | Details |
| US2373570A | Noncorrosive liquids | Expired / Lapsed | 1943-08-21 | 1945-04-10 | 0 | Details |
| US2373464A | Process for inhibiting polymerization | Expired / Lapsed | 1942-05-22 | 1945-04-10 | 0 | Details |
| US2373488A | Cast methyl methacrylate sheets | Expired / Lapsed | 1942-04-24 | 1945-04-10 | 0 | Details |
| US2373135A | Treatment of hydroxylated polymers | Expired / Lapsed | 1942-04-14 | 1945-04-10 | 0 | Details |
| US2373627A | Organic phosphorus compounds | Expired / Lapsed | 1940-09-20 | 1945-04-10 | 0 | Details |
| US2372630A | Manufacture of improved molded polyamide articles | Expired / Lapsed | 1941-05-26 | 1945-03-27 | 0 | Details |
| US2372001A | Pyrolysis products of solid polymers of ethylene | Expired / Lapsed | 1942-02-26 | 1945-03-20 | 0 | Details |
| US2370469A | Apparatus for extrusion of organic materials | Expired / Lapsed | 1940-11-30 | 1945-02-27 | 0 | Details |
| US2369716A | Bag closure | Expired / Lapsed | 1942-01-15 | 1945-02-20 | 0 | Details |
| US2369593A | Production of cast sheets | Expired / Lapsed | 1943-10-16 | 1945-02-13 | 0 | Details |
| US2369553A | Extrusion apparatus | Expired / Lapsed | 1943-04-29 | 1945-02-13 | 0 | Details |
| US2369520A | Method of polymerizing unsaturated methylene compounds | Expired / Lapsed | 1939-10-06 | 1945-02-13 | 0 | Details |
| US2369057A | Process for treating acrylic resins | Expired / Lapsed | 1941-09-26 | 1945-02-06 | 0 | Details |
| US2367660A | Process of photopolymerization | Expired / Lapsed | 1941-12-31 | 1945-01-23 | 0 | Details |
| US2366027A | Detergent and wetting compositions | Expired / Lapsed | 1942-04-01 | 1944-12-26 | 0 | Details |
| US2365931A | Finishing of polyamide fabrics | Expired / Lapsed | 1941-02-13 | 1944-12-26 | 0 | Details |
| US2364730A | Means for detonating explosive rivets | Expired / Lapsed | 1942-05-18 | 1944-12-12 | 0 | Details |
| US2364790A | Treatment of organic dielectric materials with high-frequen… | Expired / Lapsed | 1941-09-13 | 1944-12-12 | 0 | Details |
| US2364273A | Production of cellulosic structures | Expired / Lapsed | 1941-11-22 | 1944-12-05 | 0 | Details |
| US2364435A | Manufacture of films | Expired / Lapsed | 1941-11-04 | 1944-12-05 | 0 | Details |
| US2364172A | Coating compositions | Expired / Lapsed | 1941-10-11 | 1944-12-05 | 0 | Details |
| US2362511A | Modified glycolide resins | Expired / Lapsed | 1939-11-21 | 1944-11-14 | 0 | Details |
| US2361499A | Article of manufacture | Expired / Lapsed | 1940-05-11 | 1944-10-31 | 0 | Details |
| US2361464A | Article of manufacture | Expired / Lapsed | 1940-04-02 | 1944-10-31 | 0 | Details |
| US2361449A | Article of manufacture | Expired / Lapsed | 1940-02-24 | 1944-10-31 | 0 | Details |
| US2360950A | Welding plastic material and device therefor | Expired / Lapsed | 1943-02-15 | 1944-10-24 | 0 | Details |
| US2360946A | Reinforced rubber structures | Expired / Lapsed | 1941-05-06 | 1944-10-24 | 0 | Details |
| US2360947A | Moistureproof pellicle | Expired / Lapsed | 1934-10-23 | 1944-10-24 | 0 | Details |
| US2360665A | Apparatus for heat extraction | Expired / Lapsed | 1943-04-29 | 1944-10-17 | 0 | Details |
| US2360712A | Plastic sheeting and treatment thereof | Expired / Lapsed | 1940-07-10 | 1944-10-17 | 0 | Details |
| US2360650A | Method of treating plastic sheeting | Expired / Lapsed | 1940-07-10 | 1944-10-17 | 0 | Details |
| US2359877A | Polymeric compositions | Expired / Lapsed | 1940-10-24 | 1944-10-10 | 0 | Details |
| US2358355A | Treatment of polyvinyl butyral resins | Expired / Lapsed | 1942-02-11 | 1944-09-19 | 0 | Details |
| US2358376A | Process for the manufacture of regenerated cellulose ribbons | Expired / Lapsed | 1941-11-01 | 1944-09-19 | 0 | Details |
| US2357484A | Process for producing compounds containing an n-substituted… | Expired / Lapsed | 1941-09-12 | 1944-09-05 | 0 | Details |
| US2356542A | Process of rendering massive inorganic bodies hydrophobic | Expired / Lapsed | 1943-08-26 | 1944-08-22 | 0 | Details |
| US2356091A | Copolymers of sulphur modified polyhaloprenes | Expired / Lapsed | 1942-05-20 | 1944-08-15 | 0 | Details |
| US2352725A | Shaped product | Expired / Lapsed | 1941-11-04 | 1944-07-04 | 0 | Details |
| US2351090A | Process of preparing rubber-coated artificial filaments | Expired / Lapsed | 1941-11-21 | 1944-06-13 | 0 | Details |
| US2350366A | Moisture-resistant cellophane | Expired / Lapsed | 1942-03-28 | 1944-06-06 | 0 | Details |
| US2350182A | Yarn production | Expired / Lapsed | 1941-12-20 | 1944-05-30 | 0 | Details |
| US2349756A | Formaldehyde resin modified with a polyiso-or polyisothiocy… | Expired / Lapsed | 1940-07-25 | 1944-05-23 | 0 | Details |
| US2348536A | Electrical insulation | Expired / Lapsed | 1937-06-03 | 1944-05-09 | 0 | Details |
| US2347408A | Location of faults in electrolytic cell systems | Expired / Lapsed | 1942-04-16 | 1944-04-25 | 0 | Details |
| US2347031A | Air filter | Expired / Lapsed | 1940-06-07 | 1944-04-18 | 0 | Details |
| US2346258A | Method for production of cellulose acetate staple | Expired / Lapsed | 1941-06-13 | 1944-04-11 | 0 | Details |
| US2346208A | Treatment of high tenacity yarn of synthetic origin | Expired / Lapsed | 1941-04-08 | 1944-04-11 | 0 | Details |
| US2345917A | Injection molding of plastics | Expired / Lapsed | 1941-10-04 | 1944-04-04 | 0 | Details |
| US2346036A | Bonding of methacrylate polymers | Expired / Lapsed | 1940-11-29 | 1944-04-04 | 0 | Details |
| US2346124A | Bullet lubrication | Expired / Lapsed | 1939-12-08 | 1944-04-04 | 0 | Details |
| US2344793A | Coating composition | Expired / Lapsed | 1942-04-25 | 1944-03-21 | 0 | Details |
| US2343093A | Treatment of textiles and composition useful therefor | Expired / Lapsed | 1940-08-03 | 1944-02-29 | 0 | Details |
| US2343095A | Resin dispersion useful in the textile and paper industries | Expired / Lapsed | 1940-08-03 | 1944-02-29 | 0 | Details |
| US2343089A | Treatment of textiles and composition useful therefor | Expired / Lapsed | 1940-08-03 | 1944-02-29 | 0 | Details |
| US2341615A | Apparatus for dry spinning cellulose acetate yarn | Expired / Lapsed | 1941-06-11 | 1944-02-15 | 0 | Details |
| US2341016A | Condensation of aldehydes with carboxylic acids and their d… | Expired / Lapsed | 1941-09-09 | 1944-02-08 | 0 | Details |
| US2340577A | Yarn treatment | Expired / Lapsed | 1942-07-11 | 1944-02-01 | 0 | Details |
| US2339775A | Coating composition | Expired / Lapsed | 1942-05-16 | 1944-01-25 | 0 | Details |
| US2339913A | Cellulose treatment process | Expired / Lapsed | 1942-02-27 | 1944-01-25 | 0 | Details |
| US2339237A | Blended polyamides | Expired / Lapsed | 1941-04-11 | 1944-01-18 | 0 | Details |
| US2337834A | Polymeric material | Expired / Lapsed | 1940-05-07 | 1943-12-28 | 0 | Details |
| US2336792A | Rubber product | Expired / Lapsed | 1941-03-14 | 1943-12-14 | 0 | Details |
| US2336797A | Felted product | Expired / Lapsed | 1939-06-19 | 1943-12-14 | 0 | Details |
| US2335582A | Fabric and finish | Expired / Lapsed | 1940-10-30 | 1943-11-30 | 0 | Details |
| US2335133A | Tooth reconstruction | Expired / Lapsed | 1942-05-30 | 1943-11-23 | 0 | Details |
| US2334236A | Coated cellulosic material | Expired / Lapsed | 1940-12-11 | 1943-11-16 | 0 | Details |
| US2334476A | Unsaturated isocyanate | Expired / Lapsed | 1940-09-04 | 1943-11-16 | 0 | Details |
| US2334015A | Solvent recovery apparatus | Expired / Lapsed | 1941-10-20 | 1943-11-09 | 0 | Details |
| US2333917A | Coated fabric | Expired / Lapsed | 1941-07-15 | 1943-11-09 | 0 | Details |
| US2333922A | Insulated electrical conductor | Expired / Lapsed | 1941-07-14 | 1943-11-09 | 0 | Details |
| US2333639A | Treatment of polyesters and product therefrom | Expired / Lapsed | 1940-07-02 | 1943-11-09 | 0 | Details |
| US2333914A | Isocyanate treatment of polyamides | Expired / Lapsed | 1940-07-02 | 1943-11-09 | 0 | Details |
| US2333788A | Reaction of saturated hydrocarbons with liquid sulphur diox… | Expired / Lapsed | 1940-06-27 | 1943-11-09 | 0 | Details |
| US2333206A | Protection of ferrous metals against corrosion | Expired / Lapsed | 1939-05-13 | 1943-11-02 | 0 | Details |
| US2332817A | Textile treating method | Expired / Lapsed | 1940-08-03 | 1943-10-26 | 0 | Details |
| US2332373A | Flexible transparent sheet material | Expired / Lapsed | 1942-03-03 | 1943-10-19 | 0 | Details |
| US2331276A | Organic thiocyanates and isothiocyanates and process of pre… | Expired / Lapsed | 1940-10-30 | 1943-10-05 | 0 | Details |
| US2330314A | Manufacture of nonwoven fabrics | Expired / Lapsed | 1940-08-23 | 1943-09-28 | 0 | Details |
| US2329239A | Method of and mold for forming cellulose sponges | Expired / Lapsed | 1940-08-02 | 1943-09-14 | 0 | Details |
| US2328074A | Manufacture of textile yarn | Expired / Lapsed | 1940-07-16 | 1943-08-31 | 0 | Details |
| US2327985A | Acyl isothiocyanate and polymer thereof | Expired / Lapsed | 1940-03-29 | 1943-08-31 | 0 | Details |
| US2327087A | Manufacture of staple fibers | Expired / Lapsed | 1940-12-18 | 1943-08-17 | 0 | Details |
| US2326949A | Formed tetrasodium pyrophosphate composition and process fo… | Expired / Lapsed | 1940-11-29 | 1943-08-17 | 0 | Details |
| US2326287A | Copolymer of unsaturated isocyanates | Expired / Lapsed | 1940-09-04 | 1943-08-10 | 0 | Details |
| US2325060A | Nonshrinking yarn | Expired / Lapsed | 1942-02-25 | 1943-07-27 | 0 | Details |
| US2325129A | Yarn finishing | Expired / Lapsed | 1941-11-01 | 1943-07-27 | 0 | Details |
| US2324601A | Sizing | Expired / Lapsed | 1940-09-21 | 1943-07-20 | 0 | Details |
| US2324397A | Method for production of continuous structures | Expired / Lapsed | 1941-06-04 | 1943-07-13 | 0 | Details |
| US2322761A | Composition and method | Expired / Lapsed | 1942-02-20 | 1943-06-29 | 0 | Details |
| US2321759A | Molding compounds | Expired / Lapsed | 1940-03-30 | 1943-06-15 | 0 | Details |
| US2321048A | Opalescent synthetic resins | Expired / Lapsed | 1941-09-12 | 1943-06-08 | 0 | Details |
| US2319082A | Apparatus for overspray recovery | Expired / Lapsed | 1940-12-14 | 1943-05-11 | 0 | Details |
| US2318429A | Aqueous dispersion of polymerized alkyl methacrylate and me… | Expired / Lapsed | 1940-08-03 | 1943-05-04 | 0 | Details |
| US2317911A | Rubber structure | Expired / Lapsed | 1941-06-25 | 1943-04-27 | 0 | Details |
| US2317687A | Production of hollow articles from polymeric compositions | Expired / Lapsed | 1940-04-04 | 1943-04-27 | 0 | Details |
| US2317131A | Film and filament formation | Expired / Lapsed | 1940-12-31 | 1943-04-20 | 0 | Details |
| US2317110A | Method of making brushes | Expired / Lapsed | 1938-08-04 | 1943-04-20 | 0 | Details |
| US2313728A | Tanning | Expired / Lapsed | 1941-10-06 | 1943-03-16 | 0 | Details |
| US2312913A | Polyamide coated film element | Expired / Lapsed | 1941-08-18 | 1943-03-02 | 0 | Details |
| US2312879A | Fiber-forming polymers and method of making them | Expired / Lapsed | 1940-04-22 | 1943-03-02 | 0 | Details |
| US2311174A | Textile crinkler | Expired / Lapsed | 1940-12-06 | 1943-02-16 | 0 | Details |
| US2309729A | Molding of polymeric materials | Expired / Lapsed | 1938-09-30 | 1943-02-02 | 0 | Details |
| US2308581A | Copolymerized substances containing methacrylic anhydride | Expired / Lapsed | 1940-03-30 | 1943-01-19 | 0 | Details |
| US2307817A | Polymeric product and process | Expired / Lapsed | 1940-09-26 | 1943-01-12 | 0 | Details |
| US2307508A | Preventing evaporation from oil storage tanks | Expired / Lapsed | 1939-10-04 | 1943-01-05 | 0 | Details |
| US2306790A | Film | Expired / Lapsed | 1940-03-02 | 1942-12-29 | 0 | Details |
| US2304637A | Resinous anion exchange material | Expired / Lapsed | 1939-11-30 | 1942-12-08 | 0 | Details |
| US2303927A | Coupling | Expired / Lapsed | 1941-12-20 | 1942-12-01 | 0 | Details |
| US2302557A | Rubber product | Expired / Lapsed | 1941-03-14 | 1942-11-17 | 0 | Details |
| US2301959A | Moistureproof sheet wrapping material | Expired / Lapsed | 1940-09-10 | 1942-11-17 | 0 | Details |
| US2302167A | Footwear | Expired / Lapsed | 1940-06-14 | 1942-11-17 | 0 | Details |
| US2302332A | Coating process | Expired / Lapsed | 1940-04-09 | 1942-11-17 | 0 | Details |
| US2302583A | Plastic composition | Expired / Lapsed | 1938-12-21 | 1942-11-17 | 0 | Details |
| US2301703A | Knitting method | Expired / Lapsed | 1942-02-21 | 1942-11-10 | 0 | Details |
| US2300849A | Sulphuric acid manufacture and apparatus therefor | Expired / Lapsed | 1940-03-09 | 1942-11-03 | 0 | Details |
| US2300074A | Sizing | Expired / Lapsed | 1940-09-21 | 1942-10-27 | 0 | Details |
| US2300083A | Method and apparatus for the production of structures | Expired / Lapsed | 1940-05-04 | 1942-10-27 | 0 | Details |
| US2299839A | Polymeric materials | Expired / Lapsed | 1939-09-25 | 1942-10-27 | 0 | Details |
| US2297801A | Azo dyes | Expired / Lapsed | 1940-12-24 | 1942-10-06 | 0 | Details |
| US2297746A | Process for the production of cellulosic structures | Expired / Lapsed | 1940-10-17 | 1942-10-06 | 0 | Details |
| US2296948A | Plastics manufacture | Expired / Lapsed | 1937-12-16 | 1942-09-29 | 0 | Details |
| US2296394A | Manufacture of novelty artificial yarn | Expired / Lapsed | 1940-11-22 | 1942-09-22 | 0 | Details |
| US2296249A | Polymers of formaldehyde | Expired / Lapsed | 1940-08-26 | 1942-09-22 | 0 | Details |
| US2295593A | Yarn preparation | Expired / Lapsed | 1941-07-30 | 1942-09-15 | 0 | Details |
| US2295942A | Manufacture of filaments | Expired / Lapsed | 1940-08-02 | 1942-09-15 | 0 | Details |
| US2296202A | Process of making artificial wool | Expired / Lapsed | 1940-03-19 | 1942-09-15 | 0 | Details |
| US2293003A | Yarn structure | Expired / Lapsed | 1941-10-08 | 1942-08-11 | 0 | Details |
| US2292406A | Ether resin | Expired / Lapsed | 1940-08-02 | 1942-08-11 | 0 | Details |
| US2292905A | Artificial filament | Expired / Lapsed | 1939-07-06 | 1942-08-11 | 0 | Details |
| US2291873A | Synthetic filament | Expired / Lapsed | 1939-07-14 | 1942-08-04 | 0 | Details |
| US2291238A | Method and apparatus for producing pellicles | Expired / Lapsed | 1937-11-30 | 1942-07-28 | 0 | Details |
| US2290794A | Aqueous dispersions of ethylene polymers | Expired / Lapsed | 1939-03-22 | 1942-07-21 | 0 | Details |
| US2289775A | Protein-polyamide mixture | Expired / Lapsed | 1940-06-14 | 1942-07-14 | 0 | Details |
| US2289774A | Process and apparatus for shaping polymeric materials | Expired / Lapsed | 1939-06-30 | 1942-07-14 | 0 | Details |
| US2289540A | Polymerization of water soluble polymers | Expired / Lapsed | 1939-04-18 | 1942-07-14 | 0 | Details |
| US2289377A | Synthetic polymer | Expired / Lapsed | 1938-08-26 | 1942-07-14 | 0 | Details |
| US2289222A | Yarn preparation | Expired / Lapsed | 1941-02-14 | 1942-07-07 | 0 | Details |
| US2289232A | Method and apparatus for producing filamentary structures | Expired / Lapsed | 1939-07-14 | 1942-07-07 | 0 | Details |
| US2287411A | Adhesive | Expired / Lapsed | 1940-12-19 | 1942-06-23 | 0 | Details |
| US2287099A | Artificial wool | Expired / Lapsed | 1938-01-07 | 1942-06-23 | 0 | Details |
| US2286752A | Resin | Expired / Lapsed | 1940-03-11 | 1942-06-16 | 0 | Details |
| US2286985A | Analysis of gas mixtures | Expired / Lapsed | 1939-07-04 | 1942-06-16 | 0 | Details |
| US2285967A | Method for production of fabrics | Expired / Lapsed | 1940-08-22 | 1942-06-09 | 0 | Details |
| US2285552A | Production of filaments | Expired / Lapsed | 1940-07-25 | 1942-06-09 | 0 | Details |
| US2285855A | Lubrication | Expired / Lapsed | 1936-04-10 | 1942-06-09 | 0 | Details |
| US2285302A | Process for cementing oil wells | Expired / Lapsed | 1939-12-18 | 1942-06-02 | 0 | Details |
| US2285245A | Production of artificial filaments | Expired / Lapsed | 1939-11-29 | 1942-06-02 | 0 | Details |
| US2284896A | Process for making polymeric products and for modifying pol… | Expired / Lapsed | 1939-05-24 | 1942-06-02 | 0 | Details |
| US2284637A | Polymeric carbamates and their preparation | Expired / Lapsed | 1938-09-29 | 1942-06-02 | 0 | Details |
| US2284895A | Treatment of textiles to impart water-repellence | Expired / Lapsed | 1937-10-08 | 1942-06-02 | 0 | Details |
| US2284525A | Process for the hydrogenation of adiponitrile | Expired / Lapsed | 1939-09-16 | 1942-05-26 | 0 | Details |
| US2282827A | Resinous product and method of making | Expired / Lapsed | 1939-11-13 | 1942-05-12 | 0 | Details |
| US2281589A | Moistureproof wrapping material | Expired / Lapsed | 1940-06-08 | 1942-05-05 | 0 | Details |
| US2280829A | Coated cellulosic film | Expired / Lapsed | 1939-09-01 | 1942-04-28 | 0 | Details |
| US2279774A | Coated product | Expired / Lapsed | 1938-09-29 | 1942-04-14 | 0 | Details |
| US2280022A | Method and apparatus for molding cellulosic structures | Expired / Lapsed | 1937-06-15 | 1942-04-14 | 0 | Details |
| US2278902A | Yarn sizing process | Expired / Lapsed | 1940-12-13 | 1942-04-07 | 0 | Details |
| US2278747A | Chemical composition | Expired / Lapsed | 1940-05-23 | 1942-04-07 | 0 | Details |
| US2278879A | Yarn structure and method and apparatus for producing same | Expired / Lapsed | 1939-10-12 | 1942-04-07 | 0 | Details |
| US2278888A | Artificial structure and process for producing same | Expired / Lapsed | 1938-11-02 | 1942-04-07 | 0 | Details |
| US2278875A | Method and apparatus for the production of artificial struc… | Expired / Lapsed | 1938-09-29 | 1942-04-07 | 0 | Details |
| US2277680A | Insecticide | Expired / Lapsed | 1941-02-01 | 1942-03-31 | 0 | Details |
| US2277788A | Treatment of textiles and composition useful therefor | Expired / Lapsed | 1940-08-03 | 1942-03-31 | 0 | Details |
| US2278350A | Polymeric material | Expired / Lapsed | 1940-05-08 | 1942-03-31 | 0 | Details |
| US2277083A | Composition | Expired / Lapsed | 1940-06-05 | 1942-03-24 | 0 | Details |
| US2277152A | Preparation of polyamides | Expired / Lapsed | 1939-12-07 | 1942-03-24 | 0 | Details |
| US2276315A | Tanning | Expired / Lapsed | 1941-06-04 | 1942-03-17 | 0 | Details |
| US2276840A | Polymeric vinylimides | Expired / Lapsed | 1939-07-18 | 1942-03-17 | 0 | Details |
| US2276138A | Vinylaryl esters | Expired / Lapsed | 1940-04-30 | 1942-03-10 | 0 | Details |
| US2276094A | Alpha, beta-unsaturated primary alcohol esters of silicic a… | Expired / Lapsed | 1939-08-24 | 1942-03-10 | 0 | Details |
| US2275125A | Nu-cyclohexyl sulphamic acid and salts | Expired / Lapsed | 1940-08-04 | 1942-03-03 | 0 | Details |
| US2275348A | Cellulosic film and method of making | Expired / Lapsed | 1940-01-12 | 1942-03-03 | 0 | Details |
| US2275008A | Polymeric materials | Expired / Lapsed | 1939-09-25 | 1942-03-03 | 0 | Details |
| US2275312A | Process of nuclear alkylation in the presence of hydrofluor… | Expired / Lapsed | 1938-06-29 | 1942-03-03 | 0 | Details |
| US2274541A | Erosion-corrosion testing device | Expired / Lapsed | 1940-01-25 | 1942-02-24 | 0 | Details |
| US2273880A | Moistureproof sheet wrapping material | Expired / Lapsed | 1939-11-01 | 1942-02-24 | 0 | Details |
| US2274252A | Composition | Expired / Lapsed | 1938-04-13 | 1942-02-24 | 0 | Details |
| US2273040A | Chemical process and product | Expired / Lapsed | 1940-09-26 | 1942-02-17 | 0 | Details |
| US2273106A | Production of artificial yarns | Expired / Lapsed | 1939-11-15 | 1942-02-17 | 0 | Details |
| US2273664A | Pest control | Expired / Lapsed | 1939-04-21 | 1942-02-17 | 0 | Details |
| US2273638A | Spinnerette lubricant | Expired / Lapsed | 1939-03-24 | 1942-02-17 | 0 | Details |
| US2273200A | Artificial structure | Expired / Lapsed | 1938-11-01 | 1942-02-17 | 0 | Details |
| US2273105A | Method and apparatus for the production of artificial struc… | Expired / Lapsed | 1938-08-09 | 1942-02-17 | 0 | Details |
| US2272847A | Molding of organic plastics | Expired / Lapsed | 1940-07-23 | 1942-02-10 | 0 | Details |
| US2272666A | Process of dry spinning artificial thread | Expired / Lapsed | 1937-10-23 | 1942-02-10 | 0 | Details |
| US2271468A | Water soluble polyvinyl alcohol softened with beta-hydroxy-… | Expired / Lapsed | 1941-01-18 | 1942-01-27 | 0 | Details |
| US2271384A | Three component interpolymers | Expired / Lapsed | 1940-04-01 | 1942-01-27 | 0 | Details |
| US2270386A | Aliphatic hydrocarbon ammonium chromate | Expired / Lapsed | 1939-05-13 | 1942-01-20 | 0 | Details |
| US2270223A | Felted product | Expired / Lapsed | 1939-11-14 | 1942-01-13 | 0 | Details |
| US2269125A | Method of making laminated fabrics | Expired / Lapsed | 1940-02-23 | 1942-01-06 | 0 | Details |
| US2268611A | Process of laminating | Expired / Lapsed | 1937-06-16 | 1942-01-06 | 0 | Details |
| US2268121A | Coated fabric | Expired / Lapsed | 1940-08-31 | 1941-12-30 | 0 | Details |
| US2268160A | Spongy superpolymer | Expired / Lapsed | 1939-06-21 | 1941-12-30 | 0 | Details |
| US2267718A | Textile treating process | Expired / Lapsed | 1939-03-29 | 1941-12-30 | 0 | Details |
| US2266363A | Apparatus for the production of filaments | Expired / Lapsed | 1938-11-10 | 1941-12-16 | 0 | Details |
| US2266368A | Apparatus for the production of artificial structures | Expired / Lapsed | 1938-11-10 | 1941-12-16 | 0 | Details |
| US2265242A | Preparation of ethenoid resins | Expired / Lapsed | 1939-07-29 | 1941-12-09 | 0 | Details |
| US2265226A | Cast resins having integral sheen | Expired / Lapsed | 1936-10-17 | 1941-12-09 | 0 | Details |
| US2264812A | Chemical process for splitting of ethylidene diacetate | Expired / Lapsed | 1939-03-04 | 1941-12-02 | 0 | Details |
| US2261002A | Organic nitrogen compounds | Expired / Lapsed | 1941-06-17 | 1941-10-28 | 0 | Details |
| US2259524A | Method for polymerizing and molding unsaturated methylene c… | Expired / Lapsed | 1940-02-23 | 1941-10-21 | 0 | Details |
| US2259512A | Mixed anhydrides of formic acid and acrylic and the alpha s… | Expired / Lapsed | 1939-04-01 | 1941-10-21 | 0 | Details |
| US2257355A | Method for attaching couplings to hose | Expired / Lapsed | 1938-11-07 | 1941-09-30 | 0 | Details |
| US2256483A | Synthetic spongy material | Expired / Lapsed | 1939-06-21 | 1941-09-23 | 0 | Details |
| US2253089A | Spinning apparatus and method | Expired / Lapsed | 1939-02-18 | 1941-08-19 | 0 | Details |
| US2252684A | Apparatus for the production of artificial structures | Expired / Lapsed | 1938-11-01 | 1941-08-19 | 0 | Details |
| US2251268A | Article of manufacture | Expired / Lapsed | 1940-04-06 | 1941-08-05 | 0 | Details |
| US2251508A | Treatment of polyamides | Expired / Lapsed | 1939-08-04 | 1941-08-05 | 0 | Details |
| US2251519A | Process for making polymeric materials | Expired / Lapsed | 1939-02-07 | 1941-08-05 | 0 | Details |
| US2251216A | Sulphur removal from gases | Expired / Lapsed | 1939-10-04 | 1941-07-29 | 0 | Details |
| US2250681A | Adhesive | Expired / Lapsed | 1939-04-21 | 1941-07-29 | 0 | Details |
| US2251185A | Distillation apparatus | Expired / Lapsed | 1939-04-17 | 1941-07-29 | 0 | Details |
| US2249756A | Process | Expired / Lapsed | 1938-10-05 | 1941-07-22 | 0 | Details |
| US2249745A | Cellulosic structures and method of producing same | Expired / Lapsed | 1937-12-21 | 1941-07-22 | 0 | Details |
| US2249754A | Low substituted alkyl cellulose ether | Expired / Lapsed | 1937-12-21 | 1941-07-22 | 0 | Details |
| US2249800A | Hydraulic fluid | Expired / Lapsed | 1936-04-24 | 1941-07-22 | 0 | Details |
| US2249686A | Polymeric material | Expired / Lapsed | 1938-09-29 | 1941-07-15 | 0 | Details |
| US2246092A | Bearing | Expired / Lapsed | 1940-07-26 | 1941-06-17 | 0 | Details |
| US2246086A | Bearing | Expired / Lapsed | 1940-01-08 | 1941-06-17 | 0 | Details |
| US2246101A | Floor covering | Expired / Lapsed | 1938-01-14 | 1941-06-17 | 0 | Details |
| US2245040A | Manufacture of vinyl resins | Expired / Lapsed | 1940-03-12 | 1941-06-10 | 0 | Details |
| US2244703A | Water soluble salts of interpolymers containing methacrylic… | Expired / Lapsed | 1938-04-16 | 1941-06-10 | 0 | Details |
| US2244702A | Methacrylate polymerization products | Expired / Lapsed | 1938-04-16 | 1941-06-10 | 0 | Details |
| US2244192A | Preparation of polyamides | Expired / Lapsed | 1939-09-08 | 1941-06-03 | 0 | Details |
| US2243853A | Method of inhibiting corrosion | Expired / Lapsed | 1939-02-09 | 1941-06-03 | 0 | Details |
| US2244184A | Urea-polyamide-formaldehyde resin | Expired / Lapsed | 1938-09-30 | 1941-06-03 | 0 | Details |
| US2244208A | Polymeric material | Expired / Lapsed | 1937-10-22 | 1941-06-03 | 0 | Details |
| US2243220A | Apparatus for the application of coating compositions | Expired / Lapsed | 1938-06-29 | 1941-05-27 | 0 | Details |
| US2242117A | Method of making blasting initiators | Expired / Lapsed | 1937-12-24 | 1941-05-13 | 0 | Details |
| US2239718A | Composition of matter and pellicles of polyvinyl alcohol | Expired / Lapsed | 1937-05-27 | 1941-04-29 | 0 | Details |
| US2238669A | Preparation of silicanes | Expired / Lapsed | 1940-08-02 | 1941-04-15 | 0 | Details |
| US2238443A | Apparatus for polymerization | Expired / Lapsed | 1939-09-06 | 1941-04-15 | 0 | Details |
| US2238694A | Polymeric materials | Expired / Lapsed | 1939-05-15 | 1941-04-15 | 0 | Details |
| US2238681A | Container closure | Expired / Lapsed | 1939-03-16 | 1941-04-15 | 0 | Details |
| US2238651A | Inhibition of corrosion | Expired / Lapsed | 1937-05-21 | 1941-04-15 | 0 | Details |
| US2238714A | Purification of alkyl ethers of cellulose | Expired / Lapsed | 1936-07-25 | 1941-04-15 | 0 | Details |
| US2236513A | Fire extinguisher | Expired / Lapsed | 1939-06-28 | 1941-04-01 | 0 | Details |
| US2236545A | Cellulose glycolic acid | Expired / Lapsed | 1938-10-08 | 1941-04-01 | 0 | Details |
| US2236061A | Method of making films, threads, and the like | Expired / Lapsed | 1937-05-27 | 1941-03-25 | 0 | Details |
| US2234204A | Plastic polymer of butadiene and process of producing same | Expired / Lapsed | 1939-03-28 | 1941-03-11 | 0 | Details |
| US2234211A | Stabilized plastic chloroprene polymer and process of produ… | Expired / Lapsed | 1938-12-14 | 1941-03-11 | 0 | Details |
| US2233343A | Manufacture of ruby glass | Expired / Lapsed | 1939-03-10 | 1941-02-25 | 0 | Details |
| US2233358A | Pigments and process for producing the same | Expired / Lapsed | 1938-12-16 | 1941-02-25 | 0 | Details |
| US2232622A | H2s recorder | Expired / Lapsed | 1940-03-23 | 1941-02-18 | 0 | Details |
| US2231468A | High surface hiding pigment material and process of making … | Expired / Lapsed | 1938-12-08 | 1941-02-11 | 0 | Details |
| US2229665A | Preparation of alkyl ketals from mercaptoles and alcohols | Expired / Lapsed | 1939-08-14 | 1941-01-28 | 0 | Details |
| US2227517A | Plastic polymer and process of producing the same | Expired / Lapsed | 1937-07-30 | 1941-01-07 | 0 | Details |
| US2226529A | Synthetic filament | Expired / Lapsed | 1937-11-10 | 1940-12-31 | 0 | Details |
| US2225673A | Alkyl esters of sulphato-carboxylic acids | Expired / Lapsed | 1939-06-16 | 1940-12-24 | 0 | Details |
| US2226075A | Soap product | Expired / Lapsed | 1938-04-22 | 1940-12-24 | 0 | Details |
| US2220451A | Composition | Expired / Lapsed | 1938-02-09 | 1940-11-05 | 0 | Details |
| US2218655A | Process for producing insoluble titanates | Expired / Lapsed | 1938-06-15 | 1940-10-22 | 0 | Details |
| US2217743A | Apparatus | Expired / Lapsed | 1939-03-28 | 1940-10-15 | 0 | Details |
| US2218439A | Polymeric esters | Expired / Lapsed | 1937-08-05 | 1940-10-15 | 0 | Details |
| US2217113A | Synthetic wool | Expired / Lapsed | 1938-09-29 | 1940-10-08 | 0 | Details |
| US2216234A | Enamel composition | Expired / Lapsed | 1937-06-30 | 1940-10-01 | 0 | Details |
| US2215061A | Coating glass fabric | Expired / Lapsed | 1937-02-25 | 1940-09-17 | 0 | Details |
| US2214405A | Plasticized synthetic linear polyamide composition | Expired / Lapsed | 1938-07-25 | 1940-09-10 | 0 | Details |
| US2214397A | Plasticized synthetic linear polyamide composition | Expired / Lapsed | 1938-07-25 | 1940-09-10 | 0 | Details |
| US2214442A | Synthetic polymer | Expired / Lapsed | 1936-09-04 | 1940-09-10 | 0 | Details |
| US2213899A | Process of making an elastic fabric | Expired / Lapsed | 1937-10-19 | 1940-09-03 | 0 | Details |
| US2213544A | Manufacture of chemically pure hydrochloric acid | Expired / Lapsed | 1937-04-16 | 1940-09-03 | 0 | Details |
| US2212770A | Process for forming films from synthetic linear polymers | Expired / Lapsed | 1939-07-12 | 1940-08-27 | 0 | Details |
| US2212786A | Production of sulphonyl chlorides of olefin polymers | Expired / Lapsed | 1939-05-01 | 1940-08-27 | 0 | Details |
| US2212772A | Synthetic polymers and shaped articles therefrom | Expired / Lapsed | 1937-02-15 | 1940-08-27 | 0 | Details |
| US2211920A | Synthetic fibers and method for producing same | Expired / Lapsed | 1939-11-10 | 1940-08-20 | 0 | Details |
| US2212118A | Electric blasting initiator | Expired / Lapsed | 1939-04-20 | 1940-08-20 | 0 | Details |
| US2212155A | Process for polymerizing ethylene | Expired / Lapsed | 1938-11-01 | 1940-08-20 | 0 | Details |
| US2211931A | Cellulosic product and process for preparing same | Expired / Lapsed | 1937-06-23 | 1940-08-20 | 0 | Details |
| US2211961A | Artificial product and method for producing same | Expired / Lapsed | 1937-04-08 | 1940-08-20 | 0 | Details |
| US2211945A | Artificial cellulosic material bonded to rubber and method … | Expired / Lapsed | 1936-04-11 | 1940-08-20 | 0 | Details |
| US2211951A | Artificial cellulosic material bonded to rubber and method … | Expired / Lapsed | 1936-04-11 | 1940-08-20 | 0 | Details |
| US2211959A | Artificial cellulosic material bonded to rubber and method … | Expired / Lapsed | 1936-02-15 | 1940-08-20 | 0 | Details |
| US2210161A | Production of filamentary structures | Expired / Lapsed | 1937-10-23 | 1940-08-06 | 0 | Details |
| US2208619A | Sealing tape | Expired / Lapsed | 1937-08-14 | 1940-07-23 | 0 | Details |
| US2208135A | Filtering device | Expired / Lapsed | 1938-11-16 | 1940-07-16 | 0 | Details |
| US2207723A | Glaze for ceramic decoration | Expired / Lapsed | 1936-02-26 | 1940-07-16 | 0 | Details |
| US2206046A | Cellulosic pellicles coated with antisticking agent | Expired / Lapsed | 1938-02-02 | 1940-07-02 | 0 | Details |
| US2205042A | Softening of textile materials and compositions therefor | Expired / Lapsed | 1937-10-26 | 1940-06-18 | 0 | Details |
| US2201628A | Renewable type filter | Expired / Lapsed | 1938-11-16 | 1940-05-21 | 0 | Details |
| US2201170A | Secondary thioamides and process of preparing them | Expired / Lapsed | 1938-09-15 | 1940-05-21 | 0 | Details |
| US2201200A | Process of preparing thiolactams | Expired / Lapsed | 1938-04-04 | 1940-05-21 | 0 | Details |
| US2201892A | Leather finish | Expired / Lapsed | 1936-12-01 | 1940-05-21 | 0 | Details |
| US2201891A | Coated and impregnated fabric | Expired / Lapsed | 1936-12-01 | 1940-05-21 | 0 | Details |
| US2201747A | Method of producing moistureproof cellulosic pellicles | Expired / Lapsed | 1935-09-27 | 1940-05-21 | 0 | Details |
| US2200282A | Vapor phase catalytic hydrogenation of adiponitrile | Expired / Lapsed | 1938-03-17 | 1940-05-14 | 0 | Details |
| US2199411A | Artificial structure and method for producing same | Expired / Lapsed | 1938-11-01 | 1940-05-07 | 0 | Details |
| US2198249A | Reduction of aryl nitro compounds | Expired / Lapsed | 1938-10-13 | 1940-04-23 | 0 | Details |
| US2197896A | Artificial wool | Expired / Lapsed | 1937-02-15 | 1940-04-23 | 0 | Details |
| US2197479A | Carbamic acid esters of monoalkyl ethers of polyalkylene gl… | Expired / Lapsed | 1936-01-04 | 1940-04-16 | 0 | Details |
| US2196246A | Manufacture of chemically pure hydrochloric acid | Expired / Lapsed | 1937-04-16 | 1940-04-09 | 0 | Details |
| US2193563A | Rutile pigment from barium titanate | Expired / Lapsed | 1939-03-10 | 1940-03-12 | 0 | Details |
| US2193529A | Polyamides | Expired / Lapsed | 1936-06-05 | 1940-03-12 | 0 | Details |
| US2192314A | Moistureproof material | Expired / Lapsed | 1936-04-29 | 1940-03-05 | 0 | Details |
| US2191791A | Thread guide | Expired / Lapsed | 1937-09-09 | 1940-02-27 | 0 | Details |
| US2191957A | Resinous composition and method of preparing same | Expired / Lapsed | 1936-01-07 | 1940-02-27 | 0 | Details |
| US2191367A | Laminated product | Expired / Lapsed | 1937-02-15 | 1940-02-20 | 0 | Details |
| US2190445A | Regenerated cellulose ether product | Expired / Lapsed | 1936-01-29 | 1940-02-13 | 0 | Details |
| US2188332A | Flexible coated article | Expired / Lapsed | 1937-02-15 | 1940-01-30 | 0 | Details |
| US2187146A | Process of coagulation | Expired / Lapsed | 1936-10-24 | 1940-01-16 | 0 | Details |
| US2184310A | Photographic and printing media | Expired / Lapsed | 1937-06-10 | 1939-12-26 | 0 | Details |
| DE685805C | Adhesive mass, adhesive plaster, etc. Like. For bandage pur… | Expired / Lapsed | 1936-04-18 | 1939-12-23 | 0 | Details |
| US2181140A | Catalytic hydrogenation of epsiloncaprolactam to amines | Expired / Lapsed | 1938-09-29 | 1939-11-28 | 0 | Details |
| US2181663A | Diurethane-diamine polymeric materials | Expired / Lapsed | 1938-05-10 | 1939-11-28 | 0 | Details |
| US2177637A | Polymeric material | Expired / Lapsed | 1938-09-14 | 1939-10-31 | 0 | Details |
| US2177359A | Advertising device and secondary closure | Expired / Lapsed | 1937-03-23 | 1939-10-24 | 0 | Details |
| US2175249A | Ignition composition | Expired / Lapsed | 1937-10-28 | 1939-10-10 | 0 | Details |
| US2174554A | Colored glass | Expired / Lapsed | 1937-12-15 | 1939-10-03 | 0 | Details |
| US2174527A | Polyamides | Expired / Lapsed | 1936-06-05 | 1939-10-03 | 0 | Details |
| US2172374A | Polymerization process | Expired / Lapsed | 1937-11-09 | 1939-09-12 | 0 | Details |
| US2173005A | Resinous products from aldehydes and acrylic amides | Expired / Lapsed | 1936-07-08 | 1939-09-12 | 0 | Details |
| US2171805A | Resilient material | Expired / Lapsed | 1937-07-02 | 1939-09-05 | 0 | Details |
| US2171764A | Method for making seamless tubing | Expired / Lapsed | 1935-03-16 | 1939-09-05 | 0 | Details |
| FR845536A | Abrasive materials | Expired / Lapsed | 1938-11-02 | 1939-08-25 | 0 | Details |
| US2169250A | Process of forming films, threads, and the like | Expired / Lapsed | 1937-05-27 | 1939-08-15 | 0 | Details |
| US2168331A | Cast resin with integral sheen | Expired / Lapsed | 1936-10-17 | 1939-08-08 | 0 | Details |
| US2168336A | Cellulosic structure and method for producing same | Expired / Lapsed | 1936-06-17 | 1939-08-08 | 0 | Details |
| US2167867A | Lubricant | Expired / Lapsed | 1936-05-07 | 1939-08-01 | 0 | Details |
| US2168027A | Apparatus for the production of filaments, threads, and the… | Expired / Lapsed | 1935-12-07 | 1939-08-01 | 0 | Details |
| US2166151A | Catalytic hydrogenation of adiponitriles to produce hexamet… | Expired / Lapsed | 1937-02-23 | 1939-07-18 | 0 | Details |
| US2164950A | Process for forming agglomerates | Expired / Lapsed | 1937-10-20 | 1939-07-04 | 0 | Details |
| US2164426A | Thread production apparatus | Expired / Lapsed | 1937-06-08 | 1939-07-04 | 0 | Details |
| US2163768A | Chemical process | Expired / Lapsed | 1938-09-24 | 1939-06-27 | 0 | Details |
| US2163636A | Process for preparing linear condensation polyamides | Expired / Lapsed | 1937-08-20 | 1939-06-27 | 0 | Details |
| US2163109A | Chemical process and products therefrom | Expired / Lapsed | 1936-04-03 | 1939-06-20 | 0 | Details |
| US2161798A | Chemical process | Expired / Lapsed | 1937-10-15 | 1939-06-13 | 0 | Details |
| US2162618A | Coating metal | Expired / Lapsed | 1936-08-25 | 1939-06-13 | 0 | Details |
| US2160576A | Preparation of anhydrous boron fluoride | Expired / Lapsed | 1936-10-10 | 1939-05-30 | 0 | Details |
| US2159743A | Cellulosic structure and method for preparing same | Expired / Lapsed | 1935-06-18 | 1939-05-23 | 0 | Details |
| US2159926A | Method of softening plastic sheets | Expired / Lapsed | 1935-05-09 | 1939-05-23 | 0 | Details |
| US2159152A | Method of making moistureproof material | Expired / Lapsed | 1933-07-20 | 1939-05-23 | 0 | Details |
| US2159151A | Method of moistureproofing | Expired / Lapsed | 1933-07-20 | 1939-05-23 | 0 | Details |
| US2157117A | Steam treatment of polyamides | Expired / Lapsed | 1937-02-15 | 1939-05-09 | 0 | Details |
| US2154436A | Abrasive | Expired / Lapsed | 1937-04-13 | 1939-04-18 | 0 | Details |
| US2153577A | Process of degreasing | Expired / Lapsed | 1935-03-07 | 1939-04-11 | 0 | Details |
| US2149344A | Apparatus and process for the study of plating solutions | Expired / Lapsed | 1935-03-22 | 1939-03-07 | 0 | Details |
| US2146408A | Quaternary ammonium compounds and process of preparing the … | Expired / Lapsed | 1938-01-13 | 1939-02-07 | 0 | Details |
| US2146306A | Treatment of polymeric synthetic resins | Expired / Lapsed | 1937-08-14 | 1939-02-07 | 0 | Details |
| US2145242A | Process of making aliphatic polyureas | Expired / Lapsed | 1937-07-02 | 1939-01-31 | 0 | Details |
| US2142986A | Fibrous product | Expired / Lapsed | 1936-02-13 | 1939-01-10 | 0 | Details |
| US2141169A | Process of making shaped articles from synthetic polymers | Expired / Lapsed | 1937-02-15 | 1938-12-27 | 0 | Details |
| US2139679A | Diamides of unsaturated carboxylic acids and process of mak… | Expired / Lapsed | 1937-07-02 | 1938-12-13 | 0 | Details |
| US2139013A | Pigments | Expired / Lapsed | 1937-03-03 | 1938-12-06 | 0 | Details |
| US2138763A | Amino alcohol esters of the alpha substituted acrylic acids | Expired / Lapsed | 1938-03-30 | 1938-11-29 | 0 | Details |
| US2138578A | Method and apparatus for the production of cellulosic struc… | Expired / Lapsed | 1936-01-22 | 1938-11-29 | 0 | Details |
| US2138031A | Amino alcohol acrylates | Expired / Lapsed | 1935-09-25 | 1938-11-29 | 0 | Details |
| US2136423A | Polymerization process | Expired / Lapsed | 1937-06-02 | 1938-11-15 | 0 | Details |
| US2136424A | Process of polymerization | Expired / Lapsed | 1937-06-02 | 1938-11-15 | 0 | Details |
| US2135641A | Esters of c-dialkylglycines | Expired / Lapsed | 1936-08-05 | 1938-11-08 | 0 | Details |
| US2136296A | Nitrogen-containing cellulose derivatives | Expired / Lapsed | 1936-01-31 | 1938-11-08 | 0 | Details |
| US2135751A | Machine for packaging tooth brushes | Expired / Lapsed | 1935-12-13 | 1938-11-08 | 0 | Details |
| US2133810A | Method for the production of cellulosic structures | Expired / Lapsed | 1936-01-09 | 1938-10-18 | 0 | Details |
| US2133257A | Polymerization process | Expired / Lapsed | 1935-04-10 | 1938-10-11 | 0 | Details |
| US2132902A | Flotation process | Expired / Lapsed | 1934-06-14 | 1938-10-11 | 0 | Details |
| US2131733A | Cellulose derivatives | Expired / Lapsed | 1935-02-01 | 1938-10-04 | 0 | Details |
| US2131074A | Agglomerating comminuted zinciferous materials | Expired / Lapsed | 1935-05-20 | 1938-09-27 | 0 | Details |
| US2130948A | Synthetic fiber | Expired / Lapsed | 1937-04-09 | 1938-09-20 | 0 | Details |
| US2129708A | Urea cellulose solutions | Expired / Lapsed | 1937-07-01 | 1938-09-13 | 0 | Details |
| US2129694A | Esters of methacrylic acid | Expired / Lapsed | 1934-07-14 | 1938-09-13 | 0 | Details |
| US2129666A | Esters of methacrylic acid | Expired / Lapsed | 1934-07-14 | 1938-09-13 | 0 | Details |
| US2129662A | Esters of methacrylic acid | Expired / Lapsed | 1934-07-14 | 1938-09-13 | 0 | Details |
| US2129722A | Esters of methacrylic acid | Expired / Lapsed | 1934-07-14 | 1938-09-13 | 0 | Details |
| US2129664A | Esters of methacrylic acid | Expired / Lapsed | 1934-07-14 | 1938-09-13 | 0 | Details |
| US2129264A | Nitrogen-containing organic compounds | Expired / Lapsed | 1935-03-29 | 1938-09-06 | 0 | Details |
| US2128229A | Treatment of cellulosic materials and products resulting th… | Expired / Lapsed | 1935-03-23 | 1938-08-30 | 0 | Details |
| US2128635A | Laminated structure and method for preparing same | Expired / Lapsed | 1935-03-23 | 1938-08-30 | 0 | Details |
| US2127377A | Preparation of polynuclear hydroaromatic amines | Expired / Lapsed | 1936-12-05 | 1938-08-16 | 0 | Details |
| US2122433A | Coated films and method of making the same | Expired / Lapsed | 1936-06-17 | 1938-07-05 | 0 | Details |
| US2122781A | Parasiticides | Expired / Lapsed | 1935-05-16 | 1938-07-05 | 0 | Details |
| US2122246A | Method of making ornamental plastic rods | Expired / Lapsed | 1936-06-24 | 1938-06-28 | 0 | Details |
| US2121397A | Stabilized salts of hydrosulphurous acid and preparation th… | Expired / Lapsed | 1936-09-10 | 1938-06-21 | 0 | Details |
| US2121680A | Coating compositions | Expired / Lapsed | 1935-08-01 | 1938-06-21 | 0 | Details |
| US2121678A | Footwear and sole material therefor | Expired / Lapsed | 1934-09-19 | 1938-06-21 | 0 | Details |
| US2120227A | Purification of glycerol | Expired / Lapsed | 1937-04-21 | 1938-06-14 | 0 | Details |
| US2120006A | Molding organic compounds | Expired / Lapsed | 1935-04-26 | 1938-06-07 | 0 | Details |
| US2118501A | Ignition compositions | Expired / Lapsed | 1937-07-08 | 1938-05-24 | 0 | Details |
| US2118101A | Coated fabric | Expired / Lapsed | 1935-04-27 | 1938-05-24 | 0 | Details |
| US2117392A | Cellulosic articles | Expired / Lapsed | 1936-04-01 | 1938-05-17 | 0 | Details |
| US2116867A | Glue, adhesive, and the like | Expired / Lapsed | 1934-04-11 | 1938-05-10 | 0 | Details |
| US2117085A | Process of preparing laminated material | Expired / Lapsed | 1933-09-28 | 1938-05-10 | 0 | Details |
| US2116318A | Electrical equipment | Expired / Lapsed | 1935-07-31 | 1938-05-03 | 0 | Details |
| US2113767A | Manufacture of laminated glass | Expired / Lapsed | 1936-07-18 | 1938-04-12 | 0 | Details |
| US2111272A | Abrasive material | Expired / Lapsed | 1936-08-18 | 1938-03-15 | 0 | Details |
| US2109592A | Preparation of plastics | Expired / Lapsed | 1936-04-01 | 1938-03-01 | 0 | Details |
| US2109968A | Products and processes for producing same | Expired / Lapsed | 1931-11-02 | 1938-03-01 | 0 | Details |
| US2109340A | New catalysts | Expired / Lapsed | 1934-10-11 | 1938-02-22 | 0 | Details |
| US2108806A | Cellulose materials and method of treating same | Expired / Lapsed | 1934-06-26 | 1938-02-22 | 0 | Details |
| US2108805A | Transparent materials and method of producing same | Expired / Lapsed | 1934-06-04 | 1938-02-22 | 0 | Details |
| US2107275A | Drying equipment | Expired / Lapsed | 1936-07-28 | 1938-02-08 | 0 | Details |
| US2107852A | Sizing fabric | Expired / Lapsed | 1934-08-17 | 1938-02-08 | 0 | Details |
| US2104084A | Stabilization of animal and vegetable fats and oils | Expired / Lapsed | 1935-11-06 | 1938-01-04 | 0 | Details |
| US2102611A | Dihalogen butenes and process for their preparation | Expired / Lapsed | 1933-09-02 | 1937-12-21 | 0 | Details |
| US2102638A | Hydraulic fluid | Expired / Lapsed | 1933-02-24 | 1937-12-21 | 0 | Details |
| US2102205A | Cellulose mixed ethers and process for the preparation ther… | Expired / Lapsed | 1936-01-23 | 1937-12-14 | 0 | Details |
| US2102207A | Coated paper and paper-coating compositions | Expired / Lapsed | 1936-01-23 | 1937-12-14 | 0 | Details |
| US2098534A | Moistureproof article | Expired / Lapsed | 1934-12-21 | 1937-11-09 | 0 | Details |
| US2097508A | Anode | Expired / Lapsed | 1934-04-07 | 1937-11-02 | 0 | Details |
| US2097263A | Polymerization product and process of polymerization | Expired / Lapsed | 1936-07-07 | 1937-10-26 | 0 | Details |
| US2096080A | Process and apparatus for the production of textile materia… | Expired / Lapsed | 1936-06-20 | 1937-10-19 | 0 | Details |
| US2095129A | Cellulosic materials and methods of making same | Expired / Lapsed | 1935-03-19 | 1937-10-05 | 0 | Details |
| US2093501A | Electrical conductor | Expired / Lapsed | 1934-03-10 | 1937-09-21 | 0 | Details |
| US2091265A | Flexible noncollapsible tubing | Expired / Lapsed | 1936-01-18 | 1937-08-31 | 0 | Details |
| US2087237A | Sizing fabric | Expired / Lapsed | 1934-08-17 | 1937-07-20 | 0 | Details |
| US2086531A | Electric blasting initiator | Expired / Lapsed | 1935-10-30 | 1937-07-13 | 0 | Details |
| US2086419A | Process of treating cellulosic bodies | Expired / Lapsed | 1934-09-04 | 1937-07-06 | 0 | Details |
| US2085754A | Addition agents for nickel plating | Expired / Lapsed | 1934-07-30 | 1937-07-06 | 0 | Details |
| US2085543A | Process for coating metals | Expired / Lapsed | 1935-05-21 | 1937-06-29 | 0 | Details |
| US2083557A | Extrusion apparatus | Expired / Lapsed | 1935-04-27 | 1937-06-15 | 0 | Details |
| US2082797A | Cellulose ethers | Expired / Lapsed | 1932-12-08 | 1937-06-08 | 0 | Details |
| US2079524A | Manufacture of thread | Expired / Lapsed | 1934-02-28 | 1937-05-04 | 0 | Details |
| US2077421A | Catalytic hydrogenation process | Expired / Lapsed | 1930-05-27 | 1937-04-20 | 0 | Details |
| US2076949A | New product and processes for producing same | Expired / Lapsed | 1931-11-02 | 1937-04-13 | 0 | Details |
| US2075359A | Insecticide | Expired / Lapsed | 1930-10-16 | 1937-03-30 | 0 | Details |
| US2071921A | Laminated structure | Expired / Lapsed | 1935-06-18 | 1937-02-23 | 0 | Details |
| US2071917A | Process of preparing nu-alkoxyalkyl aryl sulphonamides | Expired / Lapsed | 1935-06-12 | 1937-02-23 | 0 | Details |
| US2071932A | Process of polymerization | Expired / Lapsed | 1935-03-08 | 1937-02-23 | 0 | Details |
| US2071253A | Linear condensation polymers | Expired / Lapsed | 1935-01-02 | 1937-02-16 | 0 | Details |
| US2071251A | Fiber and method of producing it | Expired / Lapsed | 1933-03-14 | 1937-02-16 | 0 | Details |
| US2071250A | Linear condensation polymers | Expired / Lapsed | 1931-07-03 | 1937-02-16 | 0 | Details |
| US2070487A | Metal cleaning | Expired / Lapsed | 1934-12-24 | 1937-02-09 | 0 | Details |
| US2069314A | Process for making bituminous compositions | Expired / Lapsed | 1933-09-19 | 1937-02-02 | 0 | Details |
| US2067234A | Pigmented granular polymers | Expired / Lapsed | 1936-03-10 | 1937-01-12 | 0 | Details |
| US2066363A | Resinous compositions | Expired / Lapsed | 1934-04-17 | 1937-01-05 | 0 | Details |
| US2063078A | Finishing system | Expired / Lapsed | 1933-04-26 | 1936-12-08 | 0 | Details |
| US2060056A | New cellulose glycollic acid and process for preparing same | Expired / Lapsed | 1933-07-25 | 1936-11-10 | 0 | Details |
| US2060715A | Synthetic resins | Expired / Lapsed | 1933-01-13 | 1936-11-10 | 0 | Details |
| US2058394A | Resinous compositions | Expired / Lapsed | 1934-05-03 | 1936-10-27 | 0 | Details |
| US2057673A | Preparation of polymerized organic compounds | Expired / Lapsed | 1935-06-26 | 1936-10-20 | 0 | Details |
| US2056796A | Polyvinyl resin compositions and process of preparing same | Expired / Lapsed | 1934-04-26 | 1936-10-06 | 0 | Details |
| US2056794A | Resin compositions and process of preparing same | Expired / Lapsed | 1934-04-26 | 1936-10-06 | 0 | Details |
| US2053474A | Higher alkyl borates and silicates and process for preparin… | Expired / Lapsed | 1934-12-11 | 1936-09-08 | 0 | Details |
| US2051944A | Moistureproofing composition and method of making same | Expired / Lapsed | 1933-07-20 | 1936-08-25 | 0 | Details |
| US2048799A | Silicon esters of modified polyhydroxy alcohols | Expired / Lapsed | 1931-10-22 | 1936-07-28 | 0 | Details |
| US2048778A | Amine modified polyhydric alcoholpolybasic acid resins | Expired / Lapsed | 1931-08-31 | 1936-07-28 | 0 | Details |
| US2046267A | Pigments | Expired / Lapsed | 1933-08-24 | 1936-06-30 | 0 | Details |
| US2040879A | Substantially undegraded deacetylated chitin and process fo… | Expired / Lapsed | 1934-06-21 | 1936-05-19 | 0 | Details |
| US2040944A | Process for producing polyhydroxy alcohols | Expired / Lapsed | 1933-09-22 | 1936-05-19 | 0 | Details |
| US2030226A | Casein dispersion | Expired / Lapsed | 1932-02-27 | 1936-02-11 | 0 | Details |
| US2029410A | Chemical products and processes for producing same | Expired / Lapsed | 1933-04-11 | 1936-02-04 | 0 | Details |
| US2025073A | Cellulose derivative and method of making the same | Expired / Lapsed | 1934-01-09 | 1935-12-24 | 0 | Details |
| US2024749A | Preparation of halogenated ethers | Expired / Lapsed | 1932-08-04 | 1935-12-17 | 0 | Details |
| US2016299A | Carbohydrate derivative and process of making the same | Expired / Lapsed | 1934-01-09 | 1935-10-08 | 0 | Details |
| US2013727A | Method and apparatus for measurement and control of gaseous… | Expired / Lapsed | 1932-07-22 | 1935-09-10 | 0 | Details |
| US2012267A | Alkylene ester of polybasic acids | Expired / Lapsed | 1929-08-01 | 1935-08-27 | 0 | Details |
| US2011914A | Fibrous material and process of producing it | Expired / Lapsed | 1928-06-29 | 1935-08-20 | 0 | Details |
| US2005619A | Esters of acids of phosphorus | Expired / Lapsed | 1934-11-10 | 1935-06-18 | 0 | Details |
| US2004466A | Abrasive | Expired / Lapsed | 1931-04-28 | 1935-06-11 | 0 | Details |
| US2002622A | Natural and artificial rubber latex | Expired / Lapsed | 1933-05-20 | 1935-05-28 | 0 | Details |
| US1998489A | Benzyl esters of halogenated orthobenzoyl-benzoic acids and… | Expired / Lapsed | 1931-05-27 | 1935-04-23 | 0 | Details |
| US1998055A | Machine for continuously applying glass spheres or particle… | Expired / Lapsed | 1934-07-19 | 1935-04-16 | 0 | Details |
| US1996292A | Container closure | Expired / Lapsed | 1933-11-04 | 1935-04-02 | 0 | Details |
| US1995991A | Direct oxidation of olefine hydrocarbons | Expired / Lapsed | 1931-04-28 | 1935-03-26 | 0 | Details |
| US1995970A | Polymeric lactide resin | Expired / Lapsed | 1931-04-04 | 1935-03-26 | 0 | Details |
| US1995291A | Alkylene carbonate and process of making it | Expired / Lapsed | 1929-11-12 | 1935-03-26 | 0 | Details |
| US1993738A | Myristyl esters of polycarboxylic acids | Expired / Lapsed | 1934-08-31 | 1935-03-12 | 0 | Details |
| US1984411A | Method of case hardening | Expired / Lapsed | 1933-06-08 | 1934-12-18 | 0 | Details |
| US1979469A | Stabilization of suspensions | Expired / Lapsed | 1931-01-23 | 1934-11-06 | 0 | Details |
| US1978953A | Method of preparing an alkali metal perborate | Expired / Lapsed | 1928-10-17 | 1934-10-30 | 0 | Details |
| US1977625A | Process of decorating glass | Expired / Lapsed | 1931-11-11 | 1934-10-23 | 0 | Details |
| US1975959A | Polymerization of vinyl compounds in the presence of film f… | Expired / Lapsed | 1930-05-13 | 1934-10-09 | 0 | Details |
| US1972961A | Disinfectant | Expired / Lapsed | 1931-05-26 | 1934-09-11 | 0 | Details |
| US1967220A | Emulsion | Expired / Lapsed | 1933-04-01 | 1934-07-24 | 0 | Details |
| US1967863A | Coated material and method of making same | Expired / Lapsed | 1931-11-02 | 1934-07-24 | 0 | Details |
| US1965369A | Chemical products and processes for producing same | Expired / Lapsed | 1932-01-26 | 1934-07-03 | 0 | Details |
| US1964000A | Catalytic hydrogenation process | Expired / Lapsed | 1930-05-27 | 1934-06-26 | 0 | Details |
| US1957134A | Stabilized motor fuel | Expired / Lapsed | 1932-08-24 | 1934-05-01 | 0 | Details |
| US1937621A | Electrolytic apparatus | Expired / Lapsed | 1931-05-08 | 1933-12-05 | 0 | Details |
| US1914097A | Insulated electrical conduit | Expired / Lapsed | 1927-10-26 | 1933-06-13 | 0 | Details |
| US1909442A | Process for catalytic synthesis | Expired / Lapsed | 1928-12-31 | 1933-05-16 | 0 | Details |
| US1908202A | Determination of carbon monoxide in a gas mixture | Expired / Lapsed | 1930-04-01 | 1933-05-09 | 0 | Details |
| US1895528A | Catalytic dehydration and dehydrogenation process | Expired / Lapsed | 1926-06-24 | 1933-01-31 | 0 | Details |
| US1889672A | Manufacture of hydrogen | Expired / Lapsed | 1928-05-15 | 1932-11-29 | 0 | Details |
| US1882808A | Ester interchange with organic acids | Expired / Lapsed | 1928-10-12 | 1932-10-18 | 0 | Details |
| US1867014A | Process of polymerizing vinyl derivatives | Expired / Lapsed | 1928-09-22 | 1932-07-12 | 0 | Details |
| US1853771A | Catalytic material and process of producing same | Expired / Lapsed | 1928-01-30 | 1932-04-12 | 0 | Details |
| US1851493A | Noncorrosive alcohols | Expired / Lapsed | 1928-09-11 | 1932-03-29 | 0 | Details |
| US1847711A | Noncorrosive alcoholic solution | Expired / Lapsed | 1928-09-11 | 1932-03-01 | 0 | Details |
| US1811078A | Coating composition containing polymerized divinyl benzene | Expired / Lapsed | 1930-03-04 | 1931-06-23 | 0 | Details |
| US1802414A | Mine-ventilating tubing | Expired / Lapsed | 1927-04-30 | 1931-04-28 | 0 | Details |
| US1797509A | Electric blasting cap and ignition material for the same | Expired / Lapsed | 1929-03-18 | 1931-03-24 | 0 | Details |
| US1787630A | Mercury compound of para-nitro-aniline and the process of m… | Expired / Lapsed | 1923-10-06 | 1931-01-06 | 0 | Details |
| US1779232A | Chemical apparatus | Expired / Lapsed | 1929-06-29 | 1930-10-21 | 0 | Details |
| US1748331A | Process of producing organic mercury compounds | Expired / Lapsed | 1927-04-15 | 1930-02-25 | 0 | Details |
| US1734291A | Cellulose condensation product and process for making same | Expired / Lapsed | 1927-08-19 | 1929-11-05 | 0 | Details |
| US1643393A | Cyclohexyl phthalates and process of making same | Expired / Lapsed | 1922-07-15 | 1927-09-27 | 0 | Details |
| US1453048A | Spinneret | Expired / Lapsed | 1920-02-14 | 1923-04-24 | 0 | Details |
| US1439743A | Process for finishing footwear | Expired / Lapsed | 1918-12-11 | 1922-12-26 | 0 | Details |