Dow Chemical Co
Dow ChemicActive Patents
0
Total Holdings
540
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| EP0293963A2 | Fluorocarbon-containing reactive polymeric surfactants and… | Expired / Lapsed | 1988-05-11 | — | 13 | Details |
| EP0203833A1 | Radiopaque thermoset polymer | Expired / Lapsed | 1986-03-28 | — | 5 | Details |
| EP0195304A2 | Stabilization of intracellular enzymes | Expired / Lapsed | 1986-03-04 | — | 13 | Details |
| EP0128658A1 | Improved method of preparing esters of aryloxyphenoxy propa… | Expired / Lapsed | 1984-05-04 | — | 13 | Details |
| EP0066827A1 | Process for making pyridyloxyphenol compounds | Expired / Lapsed | 1982-05-28 | — | 9 | Details |
| FR2258382A1 | FR2258382A1 - - Google Patents | Expired / Lapsed | 1975-01-16 | — | 0 | Details |
| FR2096931A1 | FR2096931A1 - - Google Patents | Expired / Lapsed | 1970-07-17 | — | 0 | Details |
| GB1200106A | Improvements in or relating to absorbent medical, surgical … | Expired / Lapsed | 1967-05-26 | — | 0 | Details |
| DE1595548A1 | Process for the recovery of alpha-olefin polymers from solu… | Expired / Lapsed | 1966-11-08 | — | 0 | Details |
| GB817981A | Formed articles comprising expanded thermoplastic resinous … | Expired / Lapsed | 1957-03-06 | — | 0 | Details |
| US6680922B1 | Method for the recognition and operation of virtual private… | Expired / Lapsed | 1999-07-09 | 2004-01-20 | 26 | Details |
| US6594246B1 | IP-flow identification in a wireless point to multi-point t… | Expired / Lapsed | 1999-07-09 | 2003-07-15 | 25 | Details |
| US5166073A | Miniaturized sensor for ionizing radiation | Expired / Lapsed | 1989-05-05 | 1992-11-24 | 32 | Details |
| US5145674A | Biologically-active compounds comprising a biologically-act… | Expired / Lapsed | 1991-04-30 | 1992-09-08 | 11 | Details |
| US5082697A | Polymer salt complex for fiber or fabric treatment | Expired / Lapsed | 1990-05-08 | 1992-01-21 | 25 | Details |
| US5032622A | Densifiable and re-expandable polyurethane foam | Expired / Lapsed | 1990-07-02 | 1991-07-16 | 17 | Details |
| US5016240A | Optical recording medium | Expired / Lapsed | 1990-03-29 | 1991-05-14 | 10 | Details |
| US5007930A | Composites of unsintered calcium phosphates and synthetic b… | Expired / Lapsed | 1990-08-06 | 1991-04-16 | 11 | Details |
| US4995915A | Cleaning gas turbine fuel nozzles | Expired / Lapsed | 1988-07-15 | 1991-02-26 | 9 | Details |
| US4994396A | Method for measuring the concentration or partial pressure … | Expired / Lapsed | 1987-12-14 | 1991-02-19 | 22 | Details |
| US4950596A | Stabilization of intracellular enzymes | Expired / Lapsed | 1987-03-02 | 1990-08-21 | 54 | Details |
| US4929666A | Fluorocarbon containing, reactive polymeric surfactants and… | Expired / Lapsed | 1989-09-01 | 1990-05-29 | 12 | Details |
| US4921683A | Nitric oxide abatement with polymeric cobalt(III) chelates | Expired / Lapsed | 1989-06-20 | 1990-05-01 | 21 | Details |
| US4912142A | Antistatic phase-segregated polyurethanes | Expired / Lapsed | 1988-11-16 | 1990-03-27 | 16 | Details |
| US4871789A | Reinforced polymer compositions having excellent distinctne… | Expired / Lapsed | 1988-04-18 | 1989-10-03 | 16 | Details |
| US4843138A | Polyureaurethanes having improved low temperature propertie… | Expired / Lapsed | 1988-02-08 | 1989-06-27 | 21 | Details |
| US4842604A | Composites of unsintered calcium phosphates and synthetic b… | Expired / Lapsed | 1987-06-01 | 1989-06-27 | 9 | Details |
| US4834938A | Method for making composite articles that include complex i… | Expired / Lapsed | 1988-04-25 | 1989-05-30 | 14 | Details |
| US4806571A | Organic composition containing a fluoroalkyl sulfonic acid … | Expired / Lapsed | 1988-05-06 | 1989-02-21 | 43 | Details |
| US4778664A | Process for the removal of NO from fluid streams using a wa… | Expired / Lapsed | 1987-02-18 | 1988-10-18 | 17 | Details |
| US4769079A | Insoluble pigments and preparation thereof | Expired / Lapsed | 1986-06-20 | 1988-09-06 | 43 | Details |
| US4769080A | Insoluble pigments and preparation thereof | Expired / Lapsed | 1986-06-20 | 1988-09-06 | 47 | Details |
| US4756964A | Barrier films having an amorphous carbon coating and method… | Expired / Lapsed | 1986-09-29 | 1988-07-12 | 26 | Details |
| US4731416A | Polyurethane-type adhesives containing nonaqueous solutions… | Expired / Lapsed | 1986-06-10 | 1988-03-15 | 14 | Details |
| US4680200A | Method for preparing colloidal size particulate | Expired / Lapsed | 1985-07-22 | 1987-07-14 | 7 | Details |
| US4678516A | Sustained release dosage form based on highly plasticized c… | Expired / Lapsed | 1984-10-09 | 1987-07-07 | 15 | Details |
| US4672218A | Method for determining the onset of crystallization | Expired / Lapsed | 1984-12-04 | 1987-06-09 | 25 | Details |
| US4664866A | Method for preparing a film having preferential one-sided c… | Expired / Lapsed | 1985-02-15 | 1987-05-12 | 12 | Details |
| US4659747A | Cyclohexanedimethanol/diamine mixtures as RIM extenders | Expired / Lapsed | 1986-05-15 | 1987-04-21 | 25 | Details |
| US4618630A | Organic polymer composition containing an antistatic agent … | Expired / Lapsed | 1985-07-02 | 1986-10-21 | 32 | Details |
| US4587329A | Dense star polymers having two dimensional molecular diamet… | Expired / Lapsed | 1985-07-19 | 1986-05-06 | 19 | Details |
| US4587310A | Carbonate polymes containing a polyether polyol metal salt … | Expired / Lapsed | 1985-06-03 | 1986-05-06 | 23 | Details |
| US4585825A | Monovinylidene aromatic polymer resins having added amounts… | Expired / Lapsed | 1985-03-08 | 1986-04-29 | 22 | Details |
| US4582805A | Immobilization of biological matter via copolymers of isocy… | Expired / Lapsed | 1983-12-29 | 1986-04-15 | 17 | Details |
| US4579170A | Container for thermal energy storage materials | Expired / Lapsed | 1984-07-27 | 1986-04-01 | 8 | Details |
| US4532100A | Blown nylon film and process for the preparation thereof | Expired / Lapsed | 1983-05-06 | 1985-07-30 | 22 | Details |
| US4530941A | Reaction injection molded polyurethanes employing high mole… | Expired / Lapsed | 1983-11-02 | 1985-07-23 | 26 | Details |
| US4528366A | Production of polytriazines from aromatic polycyanates with… | Expired / Lapsed | 1984-02-15 | 1985-07-09 | 16 | Details |
| US4435548A | Branched polyamidoamines | Expired / Lapsed | 1981-04-27 | 1984-03-06 | 8 | Details |
| US4428906A | Pressure transmitting medium and method for utilizing same … | Expired / Lapsed | 1982-04-28 | 1984-01-31 | 26 | Details |
| US4390692A | Trimethylsilylation of cellulose | Expired / Lapsed | 1982-06-21 | 1983-06-28 | 12 | Details |
| US4383884A | Closed loop leaching system | Expired / Lapsed | 1981-06-01 | 1983-05-17 | 25 | Details |
| US4384096A | Liquid emulsion polymers useful as pH responsive thickeners… | Expired / Lapsed | 1980-12-23 | 1983-05-17 | 31 | Details |
| US4350601A | Preparation of viscosifiers for zinc salt workover and comp… | Expired / Lapsed | 1981-05-18 | 1982-09-21 | 7 | Details |
| US4344993A | Perfluorocarbon-polymeric coatings having low critical surf… | Expired / Lapsed | 1980-09-02 | 1982-08-17 | 10 | Details |
| US4327009A | Anti-block additives for olefin polymers | Expired / Lapsed | 1980-09-29 | 1982-04-27 | 11 | Details |
| US4325856A | Sequential emulsion polymerization process | Expired / Lapsed | 1980-01-02 | 1982-04-20 | 12 | Details |
| US4313805A | Chlorine cell catholyte series flow | Expired / Lapsed | 1980-03-03 | 1982-02-02 | 12 | Details |
| US4308349A | Isomerization of glucose to fructose using glucose isomeras… | Expired / Lapsed | 1978-03-09 | 1981-12-29 | 34 | Details |
| US4298709A | Polyhydroxyl polyether compounds containing phosphorus and … | Expired / Lapsed | 1980-06-25 | 1981-11-03 | 6 | Details |
| US4296212A | Elastomeric polyurethane-polyurea polymer prepared from an … | Expired / Lapsed | 1980-08-27 | 1981-10-20 | 14 | Details |
| US4280923A | Method for fractionating soluble polymers and colloidal par… | Expired / Lapsed | 1978-12-18 | 1981-07-28 | 9 | Details |
| US4274599A | Ore grinding process including a grinding aid of an anionic… | Expired / Lapsed | 1978-08-11 | 1981-06-23 | 22 | Details |
| US4256622A | Curable hydroxy resin compositions | Expired / Lapsed | 1980-01-07 | 1981-03-17 | 17 | Details |
| US4246363A | Reaction injection molded polyurethanes having particular f… | Expired / Lapsed | 1979-06-18 | 1981-01-20 | 44 | Details |
| US4163831A | High efficiency titanate catalyst for polymerizing olefins | Expired / Lapsed | 1976-10-26 | 1979-08-07 | 10 | Details |
| US4156669A | Latexes of encapsulated vinylidene chloride copolymer parti… | Expired / Lapsed | 1978-04-24 | 1979-05-29 | 11 | Details |
| US4148945A | Process of metal plating on plastics | Expired / Lapsed | 1974-02-04 | 1979-04-10 | 18 | Details |
| US4136830A | Ore grinding process containing copolymer grinding aids | Expired / Lapsed | 1977-11-21 | 1979-01-30 | 19 | Details |
| US4134872A | Heterogeneous polymer particles comprising an interpolymer … | Expired / Lapsed | 1977-05-20 | 1979-01-16 | 15 | Details |
| US4129715A | Polyester amides suitable for injection molding | Expired / Lapsed | 1978-01-16 | 1978-12-12 | 15 | Details |
| US4125739A | Cable shielding tape and cable | Expired / Lapsed | 1976-12-02 | 1978-11-14 | 8 | Details |
| US4123403A | Continuous process for preparing aqueous polymer microsuspe… | Expired / Lapsed | 1977-06-27 | 1978-10-31 | 20 | Details |
| US4116736A | Method of making a foam plastic cushion having a peripheral… | Expired / Lapsed | 1976-10-01 | 1978-09-26 | 9 | Details |
| US4115301A | Cross-linker for flexible and semi-flexible polyurethane fo… | Expired / Lapsed | 1977-01-06 | 1978-09-19 | 7 | Details |
| US4112207A | Radiation-curable polymers bearing quaternary nitrogen grou… | Expired / Lapsed | 1976-10-29 | 1978-09-05 | 17 | Details |
| US4101460A | High performance ion exchange composition | Expired / Lapsed | 1975-07-07 | 1978-07-18 | 26 | Details |
| US4098733A | Composites of polyurethanes and vinyl polymers | Expired / Lapsed | 1977-05-23 | 1978-07-04 | 36 | Details |
| US4094947A | Multilayer coextrusion process for producing selective refl… | Expired / Lapsed | 1976-09-03 | 1978-06-13 | 4 | Details |
| US4094841A | Highly monodisperse latexes of non-film forming polymers | Expired / Lapsed | 1974-06-17 | 1978-06-13 | 11 | Details |
| US4080296A | Hollow fiber permeator | Expired / Lapsed | 1977-03-28 | 1978-03-21 | 13 | Details |
| US4080358A | Low-dusting, free-flowing acrylamide polymer composition | Expired / Lapsed | 1976-08-09 | 1978-03-21 | 10 | Details |
| US4076673A | Absorbent articles and methods for their preparation | Expired / Lapsed | 1976-09-27 | 1978-02-28 | 22 | Details |
| US4076768A | Cross-linked block copolymer blends with improved impact re… | Expired / Lapsed | 1975-11-13 | 1978-02-28 | 12 | Details |
| US4057474A | Electrolytic production of alkali metal hydroxide | Expired / Lapsed | 1976-06-25 | 1977-11-08 | 17 | Details |
| US4056502A | Absorbent articles made from carboxylic polyelectrolyte sol… | Expired / Lapsed | 1974-08-05 | 1977-11-01 | 16 | Details |
| US4039345A | Shrinkage-compensating portland cement concrete and mortar … | Expired / Lapsed | 1975-07-17 | 1977-08-02 | 14 | Details |
| US4038245A | Char-forming polymer compositions | Expired / Lapsed | 1976-05-21 | 1977-07-26 | 11 | Details |
| US4028303A | Solid, rapid-setting, rigid polyurethanes | Expired / Lapsed | 1976-05-28 | 1977-06-07 | 20 | Details |
| US4028037A | Tube treating and apparatus therefor | Expired / Lapsed | 1976-05-26 | 1977-06-07 | 4 | Details |
| US4026111A | Method of removing dissolved non-condensibles from geotherm… | Expired / Lapsed | 1976-02-03 | 1977-05-31 | 5 | Details |
| US4017653A | Absorbent articles and methods for their preparation | Expired / Lapsed | 1975-05-01 | 1977-04-12 | 18 | Details |
| US3983095A | Absorbent fibers and process for their preparation | Expired / Lapsed | 1973-02-12 | 1976-09-28 | 22 | Details |
| US3966679A | Absorbent articles and methods for their preparation | Expired / Lapsed | 1975-05-09 | 1976-06-29 | 17 | Details |
| US3965073A | Preparation of rapid setting non-elastomeric polyurethane c… | Expired / Lapsed | 1973-12-17 | 1976-06-22 | 25 | Details |
| US3957529A | Method for cleaning and passivating a metal surface | Expired / Lapsed | 1974-06-03 | 1976-05-18 | 12 | Details |
| US3956237A | Epoxy resin compositions comprising latent amine curing age… | Expired / Lapsed | 1974-07-08 | 1976-05-11 | 9 | Details |
| US3948602A | Analytical method of monitoring air for chloromethyl ether | Expired / Lapsed | 1973-09-04 | 1976-04-06 | 7 | Details |
| US3947422A | Low profile molding composition and process for making same | Expired / Lapsed | 1974-08-05 | 1976-03-30 | 15 | Details |
| USRE28722E | Butadiene-styrene copolymer-cement composition and method o… | Expired / Lapsed | 1974-01-11 | 1976-02-24 | 8 | Details |
| US3900030A | Catamenial tampons | Expired / Lapsed | 1974-06-10 | 1975-08-19 | 5 | Details |
| US3897213A | Automated quantitative analysis of ionic species | Expired / Lapsed | 1973-08-06 | 1975-07-29 | 19 | Details |
| US3891767A | Certain triaryl tin compounds as chemosterilants | Expired / Lapsed | 1970-01-02 | 1975-06-24 | 23 | Details |
| US3887430A | Culture medium for tissue culture techniques | Expired / Lapsed | 1973-07-09 | 1975-06-03 | 5 | Details |
| US3885820A | Tubing connector | Expired / Lapsed | 1973-11-05 | 1975-05-27 | 6 | Details |
| US3883465A | Rapid setting polyurethanes from diols and polyfunctional p… | Expired / Lapsed | 1973-12-07 | 1975-05-13 | 18 | Details |
| US3882071A | Rapid setting non-elastomeric polyurethane compositions pre… | Expired / Lapsed | 1973-12-17 | 1975-05-06 | 37 | Details |
| US3882072A | Rapid setting non-elastomeric polyurethane compositions pre… | Expired / Lapsed | 1973-12-17 | 1975-05-06 | 25 | Details |
| US3867315A | Resinous compositions having high electroconductivity conta… | Expired / Lapsed | 1973-02-12 | 1975-02-18 | 15 | Details |
| US3843577A | Siloxane-modified epoxy resin compositions | Expired / Lapsed | 1972-12-26 | 1974-10-22 | 23 | Details |
| US3819813A | Method for producing an alkali metal carbonate | Expired / Lapsed | 1971-09-09 | 1974-06-25 | 0 | Details |
| US3804663A | Method of internally coating rigid or semi-rigid plastic co… | Expired / Lapsed | 1971-05-26 | 1974-04-16 | 17 | Details |
| US3798836A | A hydroponic bed for growing plants | Expired / Lapsed | 1972-12-04 | 1974-03-26 | 4 | Details |
| US3795318A | Control of ultrafiltration rates during hemodialysis with h… | Expired / Lapsed | 1972-05-26 | 1974-03-05 | 7 | Details |
| US3792144A | Packaging process | Expired / Lapsed | 1969-02-05 | 1974-02-12 | 0 | Details |
| US3789100A | Process for molding objects from rapid-setting polyurethane… | Expired / Lapsed | 1972-06-19 | 1974-01-29 | 7 | Details |
| US3773882A | Method for multilayer coextrusion | Expired / Lapsed | 1971-10-01 | 1973-11-20 | 0 | Details |
| US3773870A | Tubing irradiation process | Expired / Lapsed | 1971-08-13 | 1973-11-20 | 0 | Details |
| US3755034A | Method for making a hollow fiber separatory element | Expired / Lapsed | 1971-12-10 | 1973-08-28 | 10 | Details |
| US3755560A | Nongreasy cosmetic lotions | Expired / Lapsed | 1971-06-30 | 1973-08-28 | 0 | Details |
| US3725360A | Process for polymerizing styrene and maleic anhydride | Expired / Lapsed | 1971-03-11 | 1973-04-03 | 11 | Details |
| US3716612A | Method for the formation of composite plastic bodies | Expired / Lapsed | 1970-01-06 | 1973-02-13 | 8 | Details |
| US3707590A | Oriented saran coextrudate | Expired / Lapsed | 1970-07-27 | 1972-12-26 | 0 | Details |
| US3684554A | Method for the vapor phase surface sulfonation of plastic w… | Expired / Lapsed | 1969-06-02 | 1972-08-15 | 0 | Details |
| US3681092A | Fresh meat packaging | Expired / Lapsed | 1968-10-25 | 1972-08-01 | 0 | Details |
| US3673142A | Preparation of stable latexes from ethylenically unsaturate… | Expired / Lapsed | 1970-02-16 | 1972-06-27 | 15 | Details |
| US3673126A | Continuous process for making expandable thermoplastic resi… | Expired / Lapsed | 1967-11-13 | 1972-06-27 | 3 | Details |
| US3669103A | Absorbent product containing a hydrocelloidal composition | Expired / Lapsed | 1966-05-31 | 1972-06-13 | 7 | Details |
| US3639312A | Olefin polymers containing sugars | Expired / Lapsed | 1969-02-25 | 1972-02-01 | 0 | Details |
| US3636133A | Epoxy resin adhesive compositions containing an isocyanate … | Expired / Lapsed | 1969-11-17 | 1972-01-18 | 0 | Details |
| US3630378A | Novel water treating and storage apparatus | Expired / Lapsed | 1968-05-24 | 1971-12-28 | 9 | Details |
| US3625348A | Packaging articles in containers having self-adhering inner… | Expired / Lapsed | 1969-08-08 | 1971-12-07 | 26 | Details |
| US3622555A | Method for producing low bulk density, free-flowing polymer… | Expired / Lapsed | 1969-06-02 | 1971-11-23 | 11 | Details |
| US3616935A | Preparation of antithrombogenic surfaces | Expired / Lapsed | 1970-02-05 | 1971-11-02 | 8 | Details |
| US3608946A | Device for handling of a filter membrane | Expired / Lapsed | 1968-11-19 | 1971-09-28 | 5 | Details |
| US3607350A | Electroless plating of plastics | Expired / Lapsed | 1967-12-05 | 1971-09-21 | 8 | Details |
| US3600267A | Packaging film | Expired / Lapsed | 1969-04-14 | 1971-08-17 | 0 | Details |
| US3590227A | Method and apparatus for digital measurment and control of … | Expired / Lapsed | 1968-05-31 | 1971-06-29 | 71 | Details |
| US3581767A | Coupling means for connecting molten metal transporting lin… | Expired / Lapsed | 1969-07-01 | 1971-06-01 | 7 | Details |
| US3581776A | Pipe insulation structure | Expired / Lapsed | 1968-10-02 | 1971-06-01 | 4 | Details |
| US3582455A | Laminated safety glass | Expired / Lapsed | 1968-06-20 | 1971-06-01 | 0 | Details |
| US3581204A | Electromechanical recorder automatic zero apparatus | Expired / Lapsed | 1969-04-14 | 1971-05-25 | 6 | Details |
| US3578484A | Surface preparation and electrostatic spray coating of plas… | Expired / Lapsed | 1969-02-13 | 1971-05-11 | 0 | Details |
| US3577548A | Methods for sterilizing insects with triaryltin compounds | Expired / Lapsed | 1964-12-31 | 1971-05-04 | 0 | Details |
| US3576707A | Multilayered iridescent plastic articles | Expired / Lapsed | 1969-06-06 | 1971-04-27 | 0 | Details |
| US3567488A | Process for electroless plating of carboxylic acid copolyme… | Expired / Lapsed | 1969-02-05 | 1971-03-02 | 0 | Details |
| US3567489A | Process for electroless plating of carboxylic acid copolyme… | Expired / Lapsed | 1969-02-05 | 1971-03-02 | 0 | Details |
| US3565985A | Method of preparing multilayer plastic articles | Expired / Lapsed | 1969-04-10 | 1971-02-23 | 0 | Details |
| US3565737A | Composite plastic sheet and method for the preparation ther… | Expired / Lapsed | 1965-11-26 | 1971-02-23 | 0 | Details |
| US3558330A | Packaging film and package | Expired / Lapsed | 1967-09-21 | 1971-01-26 | 0 | Details |
| US3557265A | Method of extruding laminates | Expired / Lapsed | 1967-12-29 | 1971-01-19 | 0 | Details |
| US3556635A | Fiber optic bundle | Expired / Lapsed | 1967-05-23 | 1971-01-19 | 0 | Details |
| US3550832A | Sealed containers | Expired / Lapsed | 1969-04-01 | 1970-12-29 | 0 | Details |
| US3547838A | Method for producing cellular plastic articles and the arti… | Expired / Lapsed | 1967-08-10 | 1970-12-15 | 0 | Details |
| US3546209A | Process for the fabrication of a cellulose hollow fiber sep… | Expired / Lapsed | 1968-10-10 | 1970-12-08 | 0 | Details |
| US3534901A | Bag construction | Expired / Lapsed | 1968-12-09 | 1970-10-20 | 0 | Details |
| US3520441A | Container | Expired / Lapsed | 1969-01-02 | 1970-07-14 | 0 | Details |
| US3519398A | Automatic system for controlling environment of inert atmos… | Expired / Lapsed | 1968-04-01 | 1970-07-07 | 0 | Details |
| US3509230A | Thermosettable epoxy resin adhesive compositions containing… | Expired / Lapsed | 1968-12-04 | 1970-04-28 | 0 | Details |
| US3494457A | Abuse resistant bag | Expired / Lapsed | 1968-08-05 | 1970-02-10 | 0 | Details |
| US3493500A | Acrylic acid polymers | Expired / Lapsed | 1966-10-20 | 1970-02-03 | 0 | Details |
| US3485912A | Composite article formation | Expired / Lapsed | 1965-02-09 | 1969-12-23 | 0 | Details |
| US3480168A | Thermoplastic pressure vessel for carbonated beverages | Expired / Lapsed | 1967-12-26 | 1969-11-25 | 0 | Details |
| US3480198A | Bag opening device | Expired / Lapsed | 1967-11-03 | 1969-11-25 | 0 | Details |
| US3480506A | Wood laminated with a modified ethylene polymer and a polya… | Expired / Lapsed | 1964-08-20 | 1969-11-25 | 0 | Details |
| US3475331A | Permeability separatory apparatus and process of making and… | Expired / Lapsed | 1968-02-23 | 1969-10-28 | 0 | Details |
| US3468322A | Dissolving solids in solvents | Expired / Lapsed | 1967-07-24 | 1969-09-23 | 0 | Details |
| US3467569A | Resin foam-metal laminate composites | Expired / Lapsed | 1966-06-03 | 1969-09-16 | 2 | Details |
| US3464085A | Packaging apparatus | Expired / Lapsed | 1966-09-26 | 1969-09-02 | 0 | Details |
| US3460897A | Mild alkaline oxidation treatment of polyacrylonitrile fibe… | Expired / Lapsed | 1965-06-25 | 1969-08-12 | 0 | Details |
| US3458484A | Preparation of homogeneous copolymers of alpha,beta-unsatur… | Expired / Lapsed | 1967-04-07 | 1969-07-29 | 0 | Details |
| US3454158A | Vacuum package and container therefor | Expired / Lapsed | 1967-05-17 | 1969-07-08 | 0 | Details |
| US3444239A | (p-phenylenebis(methylenethio))dialanine compounds | Expired / Lapsed | 1966-06-22 | 1969-05-13 | 0 | Details |
| US3441142A | Nonthrombogenic plastic membranes | Expired / Lapsed | 1966-07-21 | 1969-04-29 | 0 | Details |
| US3433832A | Recovery of alpha-aminocarboxylic acids from sodium chlorid… | Expired / Lapsed | 1965-12-03 | 1969-03-18 | 0 | Details |
| US3432438A | Reducing acid aqueous mediums containing bivalent tin chela… | Expired / Lapsed | 1967-05-05 | 1969-03-11 | 0 | Details |
| US3429954A | Method of making a polymer-lined pipe | Expired / Lapsed | 1965-03-22 | 1969-02-25 | 0 | Details |
| US3423496A | Process for preparing resilient graphite structures | Expired / Lapsed | 1966-04-04 | 1969-01-21 | 0 | Details |
| US3423491A | Permselective hollow fibers and method of making | Expired / Lapsed | 1964-09-02 | 1969-01-21 | 0 | Details |
| US3422008A | Wound hollow fiber permeability apparatus and process of ma… | Expired / Lapsed | 1963-10-24 | 1969-01-14 | 0 | Details |
| US3418281A | Thermally stable amino-substituted aromatic aldehyde resins… | Expired / Lapsed | 1964-01-27 | 1968-12-24 | 4 | Details |
| US3415920A | Multilayer extrusion process | Expired / Lapsed | 1965-08-19 | 1968-12-10 | 0 | Details |
| US3414499A | Simultaneous polymerization of a plurality of monomer strea… | Expired / Lapsed | 1965-02-25 | 1968-12-03 | 0 | Details |
| US3409123A | Interlocking container and lid | Expired / Lapsed | 1966-11-18 | 1968-11-05 | 0 | Details |
| US3399080A | Paper coated with an interpolymer of a monoethylenically un… | Expired / Lapsed | 1966-11-02 | 1968-08-27 | 0 | Details |
| US3394924A | Interfacial surface generator | Expired / Lapsed | 1966-07-18 | 1968-07-30 | 0 | Details |
| US3395217A | Process for the control of osseous hemorrhage | Expired / Lapsed | 1964-06-19 | 1968-07-30 | 0 | Details |
| US3387640A | Tobacco pouch | Expired / Lapsed | 1965-08-02 | 1968-06-11 | 0 | Details |
| US3386927A | Method for making porous polyurethane foams | Expired / Lapsed | 1964-08-31 | 1968-06-04 | 2 | Details |
| US3379664A | Aqueous dispersions of polymeric materials | Expired / Lapsed | 1964-04-20 | 1968-04-23 | 4 | Details |
| US3373876A | Artificial body organ apparatus | Expired / Lapsed | 1966-05-12 | 1968-03-19 | 0 | Details |
| US3362846A | Method of coating particulate material with metal carbonates | Expired / Lapsed | 1964-04-06 | 1968-01-09 | 0 | Details |
| US3362880A | Compressed drug tablets of ethyl cellulose, glyceryl monost… | Expired / Lapsed | 1963-09-20 | 1968-01-09 | 2 | Details |
| US3361842A | Liquid copolymers of ethylene, another alpha olefin and car… | Expired / Lapsed | 1963-04-25 | 1968-01-02 | 0 | Details |
| US3358749A | Interfacial surface generator and method of preparation the… | Expired / Lapsed | 1966-07-22 | 1967-12-19 | 2 | Details |
| US3358059A | Method of filling enclosures with low density particulated … | Expired / Lapsed | 1964-04-20 | 1967-12-12 | 4 | Details |
| US3356519A | Cellulose ether composition | Expired / Lapsed | 1964-02-28 | 1967-12-05 | 0 | Details |
| US3353601A | Composition and use therefor for water shut-off | Expired / Lapsed | 1965-07-26 | 1967-11-21 | 2 | Details |
| US3354084A | Aqueous gel of water-swellable acrylic polymer and non-ioni… | Expired / Lapsed | 1964-06-24 | 1967-11-21 | 2 | Details |
| US3344656A | Method of filling a vessel completely with a liquid | Expired / Lapsed | 1963-12-04 | 1967-10-03 | 2 | Details |
| US3342729A | Permeability separatory cell and apparatus and method of us… | Expired / Lapsed | 1964-12-09 | 1967-09-19 | 2 | Details |
| US3340669A | Air cushioned packets | Expired / Lapsed | 1963-01-07 | 1967-09-12 | 2 | Details |
| US3340232A | Synthetic resin which is reaction product of aryl diamine a… | Expired / Lapsed | 1964-01-27 | 1967-09-05 | 2 | Details |
| US3338997A | Method and apparatus for forming plastic containers | Expired / Lapsed | 1963-03-14 | 1967-08-29 | 2 | Details |
| US3326536A | Mixing apparatus | Expired / Lapsed | 1966-02-28 | 1967-06-20 | 2 | Details |
| US3326443A | Egg carton | Expired / Lapsed | 1965-07-19 | 1967-06-20 | 2 | Details |
| US3321099A | Composition for the lamination of glass by means of epoxy r… | Expired / Lapsed | 1963-02-04 | 1967-05-23 | 2 | Details |
| US3320218A | Cross-linked sulfonated aliphatic hydrocarbon polymers | Expired / Lapsed | 1963-04-05 | 1967-05-16 | 2 | Details |
| US3311583A | Terpolymer acrylates-acrylic acid-hydroxyalkyl esters of ac… | Expired / Lapsed | 1963-11-06 | 1967-03-28 | 2 | Details |
| US3310225A | Resealable container closure from self-adherent chlorinated… | Expired / Lapsed | 1965-08-06 | 1967-03-21 | 2 | Details |
| US3306870A | Fluid gelable composition of acrylamide polymers and aqueou… | Expired / Lapsed | 1964-06-01 | 1967-02-28 | 2 | Details |
| US3304294A | Process for acylation of alkenyl aromatic polymers | Expired / Lapsed | 1964-02-24 | 1967-02-14 | 2 | Details |
| US3302241A | Apparatus for preparation of plastic tubes | Expired / Lapsed | 1964-11-05 | 1967-02-07 | 2 | Details |
| US3303049A | Anti-fogging treatment for film and coated product | Expired / Lapsed | 1963-03-25 | 1967-02-07 | 2 | Details |
| US3301401A | Secondary waste water treatment apparatus | Expired / Lapsed | 1964-05-08 | 1967-01-31 | 2 | Details |
| US3296755A | Structural panels and structures therefrom | Expired / Lapsed | 1962-05-28 | 1967-01-10 | 1 | Details |
| US3291879A | Method and apparatus for fabricating plastic web | Expired / Lapsed | 1965-01-21 | 1966-12-13 | 4 | Details |
| US3280899A | Heat exchange agitator | Expired / Lapsed | 1965-03-22 | 1966-10-25 | 2 | Details |
| US3281385A | Coating compositions of graft copolymers of ammonium salts … | Expired / Lapsed | 1960-12-21 | 1966-10-25 | 2 | Details |
| US3279501A | Extrusion and product | Expired / Lapsed | 1965-01-28 | 1966-10-18 | 2 | Details |
| US3279239A | Method and apparatus for measurement of thermal conductivity | Expired / Lapsed | 1964-04-29 | 1966-10-18 | 2 | Details |
| US3276598A | Supported dialysis membrane | Expired / Lapsed | 1961-10-24 | 1966-10-04 | 2 | Details |
| US3266085A | Apparatus to manufacture particulate thermoplastic resinous… | Expired / Lapsed | 1964-03-20 | 1966-08-16 | 2 | Details |
| US3267053A | Phenol-formaldehyde resin compositions | Expired / Lapsed | 1962-08-08 | 1966-08-16 | 3 | Details |
| US3264368A | Aziridinylformate based polyurethanes | Expired / Lapsed | 1964-08-06 | 1966-08-02 | 2 | Details |
| US3256181A | Method of mixing a pumpable liquid and particulate material | Expired / Lapsed | 1962-05-09 | 1966-06-14 | 3 | Details |
| US3248950A | Stop mechanism for pipette filling device | Expired / Lapsed | 1964-05-25 | 1966-05-03 | 2 | Details |
| US3247171A | Process for hydrolyzing a cross-linked acrylamide polymer a… | Expired / Lapsed | 1963-04-08 | 1966-04-19 | 2 | Details |
| US3244188A | Inhibition of deposition of hydrocarbonaceous solids from o… | Expired / Lapsed | 1962-10-03 | 1966-04-05 | 2 | Details |
| US3243481A | Process for making graft copolymers of vinyl aromatic compo… | Expired / Lapsed | 1962-01-08 | 1966-03-29 | 2 | Details |
| US3239582A | Blend of polycarbonate resin and alkenylaromatic resin | Expired / Lapsed | 1962-04-13 | 1966-03-08 | 2 | Details |
| US3239197A | Interfacial surface generator | Expired / Lapsed | 1960-05-31 | 1966-03-08 | 2 | Details |
| US3235626A | Polymers of controlled branch configuration | Expired / Lapsed | 1961-03-31 | 1966-02-15 | 2 | Details |
| US3230127A | Process for forming plastic coated articles | Expired / Lapsed | 1962-03-05 | 1966-01-18 | 2 | Details |
| US3228877A | Permeability separatory apparatus and process utilizing hol… | Expired / Lapsed | 1961-06-16 | 1966-01-11 | 2 | Details |
| US3228876A | Permeability separatory apparatus, permeability separatory … | Expired / Lapsed | 1960-09-19 | 1966-01-11 | 2 | Details |
| US3218684A | Process of making cellular metal structures | Expired / Lapsed | 1962-08-31 | 1965-11-23 | 2 | Details |
| US3215647A | Synthetic rubber latex foam containing a coreactive materia… | Expired / Lapsed | 1962-06-19 | 1965-11-02 | 2 | Details |
| US3207718A | Epoxy modified vinyl copolymers of alpha, beta-unsaturated … | Expired / Lapsed | 1961-03-23 | 1965-09-21 | 2 | Details |
| US3206445A | Vinyl aromatic sulfonate polymerization process and product | Expired / Lapsed | 1962-02-05 | 1965-09-14 | 2 | Details |
| US3196592A | Machine for making and filling blown plastic bottles | Expired / Lapsed | 1964-04-10 | 1965-07-27 | 2 | Details |
| US3186941A | Water softening with fine cation exchange tubes | Expired / Lapsed | 1962-08-02 | 1965-06-01 | 2 | Details |
| US3184149A | Re-sealable bag | Expired / Lapsed | 1962-10-24 | 1965-05-18 | 2 | Details |
| US3179606A | Cellular polyurethane plastic material with rapid high stre… | Expired / Lapsed | 1960-12-19 | 1965-04-20 | 2 | Details |
| US3170953A | N-hydroxymaleamic acid | Expired / Lapsed | 1960-09-06 | 1965-02-23 | 0 | Details |
| US3157181A | Nerve electrode apparatus | Expired / Lapsed | 1962-05-02 | 1964-11-17 | 2 | Details |
| US3154021A | Pumping apparatus | Expired / Lapsed | 1962-03-14 | 1964-10-27 | 2 | Details |
| US3154604A | Method for forming articles comprising expanded thermoplast… | Expired / Lapsed | 1956-03-19 | 1964-10-27 | 2 | Details |
| US3151799A | Packaging tray | Expired / Lapsed | 1962-04-04 | 1964-10-06 | 2 | Details |
| US3152203A | Preparation of collagen films | Expired / Lapsed | 1961-05-31 | 1964-10-06 | 2 | Details |
| US3149295A | Waveguide joining by criss-cross welding of extended flanges | Expired / Lapsed | 1962-05-28 | 1964-09-15 | 1 | Details |
| US3149040A | Thin film coating for tablets and the like and method of co… | Expired / Lapsed | 1962-04-09 | 1964-09-15 | 2 | Details |
| US3149038A | Thin film coating for tablets and the like and method of co… | Expired / Lapsed | 1961-09-05 | 1964-09-15 | 2 | Details |
| US3147301A | Sulfo-organic esters of fumaric and maleic acids | Expired / Lapsed | 1960-11-22 | 1964-09-01 | 1 | Details |
| US3132562A | Launching system for rocket driven devices | Expired / Lapsed | 1961-05-16 | 1964-05-12 | 2 | Details |
| US3128200A | Coated alkenyl aromatic article and method of coating | Expired / Lapsed | 1961-11-24 | 1964-04-07 | 2 | Details |
| US3113715A | Anti-block edge for plastic bags and the like | Expired / Lapsed | 1961-02-03 | 1963-12-10 | 2 | Details |
| US3106487A | Process for imparting plastic release characteristics to po… | Expired / Lapsed | 1960-05-19 | 1963-10-08 | 1 | Details |
| US3104704A | Fluid loss control in hydraulic cement slurries | Expired / Lapsed | 1959-08-17 | 1963-09-24 | 2 | Details |
| US3096777A | Inhibition of deposition of hydrocarbonaceous solids from o… | Expired / Lapsed | 1960-04-28 | 1963-07-09 | 2 | Details |
| US3091998A | Synthetic ski slope | Expired / Lapsed | 1959-11-02 | 1963-06-04 | 2 | Details |
| US3090736A | Insoluble polyacrylic acid salts and method of preparing th… | Expired / Lapsed | 1960-01-27 | 1963-05-21 | 2 | Details |
| US3086885A | Non-clumping foamable thermoplastic polymer granules and me… | Expired / Lapsed | 1960-09-22 | 1963-04-23 | 2 | Details |
| US3075263A | Apparatus for melting metals | Expired / Lapsed | 1958-05-21 | 1963-01-29 | 0 | Details |
| US3072558A | Composite anode | Expired / Lapsed | 1961-02-13 | 1963-01-08 | 2 | Details |
| US3072584A | Method of production of multi-celled extruded foamed polyst… | Expired / Lapsed | 1959-12-21 | 1963-01-08 | 2 | Details |
| US3067147A | Process of foaming and extruding polyethylene using 1, 2-di… | Expired / Lapsed | 1957-08-28 | 1962-12-04 | 2 | Details |
| US3061402A | Wet spinning synthetic fibers | Expired / Lapsed | 1960-11-15 | 1962-10-30 | 2 | Details |
| US3058846A | Coating of shaped articles | Expired / Lapsed | 1960-07-05 | 1962-10-16 | 2 | Details |
| US3058161A | A method of molding expandable thermoplastic resinous beads | Expired / Lapsed | 1956-02-24 | 1962-10-16 | 0 | Details |
| US3041292A | Composite ion exchange resin bodies | Expired / Lapsed | 1954-12-13 | 1962-06-26 | 2 | Details |
| US3029472A | Preform injection foam molder | Expired / Lapsed | 1959-11-18 | 1962-04-17 | 0 | Details |
| US3024221A | Sulfo esters of alpha-methylene carboxylic acids | Expired / Lapsed | 1957-03-25 | 1962-03-06 | 2 | Details |
| US3022279A | Process for making hydrolyzed polyacrylamide | Expired / Lapsed | 1959-05-06 | 1962-02-20 | 2 | Details |
| FR1283953A | Method and apparatus for improving thermoplastic films | Expired / Lapsed | 1960-12-28 | 1962-02-09 | 0 | Details |
| US3017329A | Method of locating enteric constrictions with a plurality o… | Expired / Lapsed | 1957-08-15 | 1962-01-16 | 0 | Details |
| US3015851A | Process for making shaped cellular articles from foamable t… | Expired / Lapsed | 1960-10-31 | 1962-01-09 | 2 | Details |
| US3011212A | Shaping thermoplastic resinous sheets | Expired / Lapsed | 1959-12-03 | 1961-12-05 | 0 | Details |
| US3011903A | Process for patching and repairing surface defects in plywo… | Expired / Lapsed | 1958-02-13 | 1961-12-05 | 2 | Details |
| US3009207A | Process for the formation of composite films | Expired / Lapsed | 1957-03-21 | 1961-11-21 | 2 | Details |
| US3008920A | Method of inhibiting homopolymerization in graft copolymers… | Expired / Lapsed | 1959-04-27 | 1961-11-14 | 2 | Details |
| US3007772A | Preparation of metallic fluorides | Expired / Lapsed | 1957-05-23 | 1961-11-07 | 2 | Details |
| US3004950A | Copolymers of certain organosilicon monomers and n-vinyl cy… | Expired / Lapsed | 1958-12-05 | 1961-10-17 | 2 | Details |
| US3000853A | Thermoplastic compositions having improved light stability | Expired / Lapsed | 1956-12-24 | 1961-09-19 | 0 | Details |
| US2997206A | Automatic catalyst releasing apparatus | Expired / Lapsed | 1959-06-22 | 1961-08-22 | 0 | Details |
| US2993836A | Sustained release tablets | Expired / Lapsed | 1958-02-20 | 1961-07-25 | 2 | Details |
| US2988441A | Plant growth medium | Expired / Lapsed | 1959-02-18 | 1961-06-13 | 1 | Details |
| US2987501A | Process for making graft copolymers of polyethylene and pol… | Expired / Lapsed | 1958-11-05 | 1961-06-06 | 2 | Details |
| US2985508A | Manufacture of metal fluorides | Expired / Lapsed | 1957-01-07 | 1961-05-23 | 2 | Details |
| US2982749A | Inverse suspension polymerization of water soluble unsatura… | Expired / Lapsed | 1957-07-15 | 1961-05-02 | 2 | Details |
| US2980982A | Fibrous article | Expired / Lapsed | 1958-02-06 | 1961-04-25 | 2 | Details |
| US2980607A | Treatment of aqueous liquid solutions of chelate-forming me… | Expired / Lapsed | 1957-05-10 | 1961-04-18 | 2 | Details |
| US2977330A | Cellular polyalkylene-etherglycolorganic diisocyanate react… | Expired / Lapsed | 1957-12-05 | 1961-03-28 | 2 | Details |
| US2976567A | Process and apparatus for upgrading thermoplastic film | Expired / Lapsed | 1957-10-16 | 1961-03-28 | 0 | Details |
| US2970089A | Devolatilizing polymeric compositions | Expired / Lapsed | 1957-01-09 | 1961-01-31 | 2 | Details |
| US2963742A | Film tube guide | Expired / Lapsed | 1957-03-18 | 1960-12-13 | 0 | Details |
| US2963741A | Adjustable extrusion die | Expired / Lapsed | 1956-01-26 | 1960-12-13 | 0 | Details |
| US2962843A | Packaging method | Expired / Lapsed | 1955-06-02 | 1960-12-06 | 0 | Details |
| US2961400A | Control of swelling of silicates | Expired / Lapsed | 1958-04-07 | 1960-11-22 | 2 | Details |
| US2958905A | Method of fabricating expandable thermoplastic resinous mat… | Expired / Lapsed | 1959-02-05 | 1960-11-08 | 0 | Details |
| US2959565A | Compositions comprising graft copolymers of certain monomer… | Expired / Lapsed | 1958-01-29 | 1960-11-08 | 2 | Details |
| US2956855A | Dimensionally stable oriented filaments and method for prod… | Expired / Lapsed | 1955-09-01 | 1960-10-18 | 2 | Details |
| US2948696A | Process for preparing heat sealable films, compositions use… | Expired / Lapsed | 1958-08-01 | 1960-08-09 | 1 | Details |
| US2948708A | Water-soluble copolymers of ring substituted n-vinyl-2-oxaz… | Expired / Lapsed | 1958-04-03 | 1960-08-09 | 2 | Details |
| US2948665A | Process for making cellular polyethylene articles | Expired / Lapsed | 1956-10-18 | 1960-08-09 | 2 | Details |
| US2948664A | Method of making cellular polyethylene | Expired / Lapsed | 1956-10-18 | 1960-08-09 | 2 | Details |
| US2944803A | Treatment of subterranean formations containing water-solub… | Expired / Lapsed | 1959-02-24 | 1960-07-12 | 2 | Details |
| US2937066A | Method for treating polyethylene and treated polyethylene a… | Expired / Lapsed | 1955-11-23 | 1960-05-17 | 2 | Details |
| US2917550A | 4,4'-alkylidene-bis-(2-tert.-butyl phenols) | Expired / Lapsed | 1956-05-04 | 1959-12-15 | 0 | Details |
| US2913449A | Conjoint halogenation technique | Expired / Lapsed | 1957-01-18 | 1959-11-17 | 2 | Details |
| US2910454A | Hydrocarbon polymers stabilized with b-resorcylic acid dies… | Expired / Lapsed | 1958-07-09 | 1959-10-27 | 2 | Details |
| US2904601A | 1, 2-dibromo-3-chloro-1, 1, 3, 3-tetrafluoropropane | Expired / Lapsed | 1957-01-18 | 1959-09-15 | 2 | Details |
| US2897180A | Method for the preparation of improved resinous polyalcohol… | Expired / Lapsed | 1956-01-26 | 1959-07-28 | 2 | Details |
| US2894289A | Method of making permeselective membranes | Expired / Lapsed | 1956-03-01 | 1959-07-14 | 2 | Details |
| US2891058A | Process for the preparation of n-vinyl cyclic amides, carba… | Expired / Lapsed | 1958-06-02 | 1959-06-16 | 3 | Details |
| US2882253A | Method for stabilizing polyvinylpyrrolidone and composition… | Expired / Lapsed | 1955-11-16 | 1959-04-14 | 2 | Details |
| US2882264A | Polymerization of ethylene | Expired / Lapsed | 1955-10-10 | 1959-04-14 | 1 | Details |
| US2880466A | Process for preparing films from polymer latexes | Expired / Lapsed | 1957-01-14 | 1959-04-07 | 2 | Details |
| US2880056A | Synthetic fibers having a natural crimp and method for prep… | Expired / Lapsed | 1956-04-09 | 1959-03-31 | 2 | Details |
| US2878154A | Method of sealing vinylidene chloride polymer surfaces to o… | Expired / Lapsed | 1955-12-21 | 1959-03-17 | 2 | Details |
| US2875555A | Shielding plants from frostation by use of foam | Expired / Lapsed | 1957-01-23 | 1959-03-03 | 2 | Details |
| US2876260A | Preparation of symmetrical disubstituted ureas | Expired / Lapsed | 1956-08-27 | 1959-03-03 | 2 | Details |
| US2868656A | Method of coating food articles and product obtained thereby | Expired / Lapsed | 1957-12-23 | 1959-01-13 | 2 | Details |
| US2860378A | Filling voids with plastic foam | Expired / Lapsed | 1957-01-09 | 1958-11-18 | 2 | Details |
| US2853741A | Fibrous article and method of preparing the same from polym… | Expired / Lapsed | 1954-05-27 | 1958-09-30 | 0 | Details |
| US2854625A | Method for determining argon | Expired / Lapsed | 1954-04-21 | 1958-09-30 | 1 | Details |
| US2852813A | Method for handling and processing tubular film | Expired / Lapsed | 1956-03-16 | 1958-09-23 | 2 | Details |
| US2852488A | Stabilized polyolefinic compositions and method for prepari… | Expired / Lapsed | 1955-09-27 | 1958-09-16 | 2 | Details |
| US2848427A | Method of making celluloar plastic articles from vinyl arom… | Expired / Lapsed | 1953-06-01 | 1958-08-19 | 2 | Details |
| US2848428A | Latent foaming compositions of vinyl aromatic resins and me… | Expired / Lapsed | 1953-06-01 | 1958-08-19 | 2 | Details |
| US2838801A | Process for making fire-resistant cellular vinyl aromatic p… | Expired / Lapsed | 1957-03-29 | 1958-06-17 | 2 | Details |
| US2835655A | Production of water-soluble aromatic resin sulfonates by su… | Expired / Lapsed | 1953-08-19 | 1958-05-20 | 2 | Details |
| US2832994A | Accessory apparatus for making blown polystyrene film | Expired / Lapsed | 1956-08-16 | 1958-05-06 | 2 | Details |
| US2832698A | Method for destaticizing polymeric substances and articles … | Expired / Lapsed | 1956-04-30 | 1958-04-29 | 2 | Details |
| US2827445A | Purification of polymerized olefins prepared with catalytic… | Expired / Lapsed | 1955-09-16 | 1958-03-18 | 2 | Details |
| US2818630A | Process for crimping fibers | Expired / Lapsed | 1954-05-10 | 1958-01-07 | 2 | Details |
| US2790700A | Controlled coagulation of salt-spun polyacrylonitrile | Expired / Lapsed | 1954-01-27 | 1957-04-30 | 2 | Details |
| US2786783A | Coating process for polyethylene and composite articles the… | Expired / Lapsed | 1956-05-25 | 1957-03-26 | 2 | Details |
| US2783137A | Grinding compositions and making of same | Expired / Lapsed | 1951-06-08 | 1957-02-26 | 2 | Details |
| US2781291A | Magnesium chelate of ethylenediaminetetraacetic acid for tr… | Expired / Lapsed | 1953-08-21 | 1957-02-12 | 2 | Details |
| US2779721A | Method of drying butylene oxides | Expired / Lapsed | 1954-02-17 | 1957-01-29 | 0 | Details |
| US2778427A | Acidizing wells | Expired / Lapsed | 1952-02-18 | 1957-01-22 | 2 | Details |
| CA534818A | Organofluoro siloxanes containing silicon-fluorine linkages | Expired / Lapsed | — | 1956-12-25 | 0 | Details |
| US2770007A | Film stretching device | Expired / Lapsed | 1952-12-22 | 1956-11-13 | 0 | Details |
| US2763636A | Method of controlling molecular weight of polyacrylonitrile… | Expired / Lapsed | 1952-08-25 | 1956-09-18 | 2 | Details |
| US2752401A | Manufacture of chlorinated hydrocarbons | Expired / Lapsed | 1950-10-06 | 1956-06-26 | 2 | Details |
| US2745231A | Method of cleaning the inside of pipe | Expired / Lapsed | 1954-04-12 | 1956-05-15 | 0 | Details |
| US2740157A | Method and apparatus for shaping plastic foams | Expired / Lapsed | 1951-12-07 | 1956-04-03 | 2 | Details |
| US2737436A | Making continuous fibers from a normally crystalline polyme… | Expired / Lapsed | 1952-12-03 | 1956-03-06 | 2 | Details |
| US2736946A | Polyacrylonitrile fibers having a scaly integument | Expired / Lapsed | 1952-07-03 | 1956-03-06 | 0 | Details |
| US2728950A | Process for producing fibers from films of polymeric materi… | Expired / Lapsed | 1954-05-06 | 1956-01-03 | 2 | Details |
| US2720310A | Extrusion of metal | Expired / Lapsed | 1950-04-03 | 1955-10-11 | 2 | Details |
| US2717424A | Process for producing thin walled tubes from normally cryst… | Expired / Lapsed | 1954-03-01 | 1955-09-13 | 2 | Details |
| US2716072A | Methylcellulose composition and method | Expired / Lapsed | 1951-06-05 | 1955-08-23 | 2 | Details |
| US2707805A | Making films and fibers from normally crystalline polymer l… | Expired / Lapsed | 1951-09-04 | 1955-05-10 | 1 | Details |
| US2707157A | Asphalt-impregnated linoleum-type articles and method of ma… | Expired / Lapsed | 1952-01-14 | 1955-04-26 | 2 | Details |
| US2694692A | Method of making linear interpolymers of monovinyl aromatic… | Expired / Lapsed | 1950-08-25 | 1954-11-16 | 2 | Details |
| US2691644A | Sulfonation method | Expired / Lapsed | 1952-02-21 | 1954-10-12 | 2 | Details |
| US2684953A | Intumescent coating composition and an article of manufactu… | Expired / Lapsed | 1952-03-29 | 1954-07-27 | 2 | Details |
| US2684331A | Separation of substances having different degrees of ioniza… | Expired / Lapsed | 1952-01-11 | 1954-07-20 | 2 | Details |
| US2683698A | Stable emulsions of hydrocarbon polymers and method of maki… | Expired / Lapsed | 1952-11-14 | 1954-07-13 | 2 | Details |
| US2679932A | Manufacture of magnesium alloy extrusions | Expired / Lapsed | 1953-03-18 | 1954-06-01 | 2 | Details |
| US2678480A | Device for delivering metered shots of molten metal for cas… | Expired / Lapsed | 1952-01-24 | 1954-05-18 | 0 | Details |
| US2678267A | Method of making an alloy comprising magnesium and thorium | Expired / Lapsed | 1952-02-27 | 1954-05-11 | 2 | Details |
| US2676927A | Nonflammable cellular resinous bodies and method of making … | Expired / Lapsed | 1950-09-11 | 1954-04-27 | 1 | Details |
| US2669872A | Detection of fluid movement in wells | Expired / Lapsed | 1952-06-17 | 1954-02-23 | 0 | Details |
| US2669751A | Process for production of cellular thermoplastic products | Expired / Lapsed | 1950-06-29 | 1954-02-23 | 0 | Details |
| US2666691A | Recording titration apparatus | Expired / Lapsed | 1948-10-13 | 1954-01-19 | 2 | Details |
| US2659137A | Composite alloy | Expired / Lapsed | 1950-08-16 | 1953-11-17 | 2 | Details |
| US2655496A | Method for emulsifying polymerizable compounds and effectin… | Expired / Lapsed | 1950-12-22 | 1953-10-13 | 2 | Details |
| US2650195A | Method of preventing loss of fluid into thief formations | Expired / Lapsed | 1952-05-26 | 1953-08-25 | 0 | Details |
| US2648593A | Removing salts from polyacrylonitrile | Expired / Lapsed | 1952-10-27 | 1953-08-11 | 2 | Details |
| US2647236A | Electrical circuit for measuring the ratio of two potentials | Expired / Lapsed | 1948-05-20 | 1953-07-28 | 0 | Details |
| US2634459A | Process for the manufacture of crystalline vinylidene chlor… | Expired / Lapsed | 1951-02-03 | 1953-04-14 | 2 | Details |
| US2632736A | Antifoaming composition | Expired / Lapsed | 1946-08-22 | 1953-03-24 | 2 | Details |
| US2632001A | Anion exchange resins from tertiary amines and methyl styre… | Expired / Lapsed | 1948-12-29 | 1953-03-17 | 1 | Details |
| US2624014A | Refractometer | Expired / Lapsed | 1949-05-31 | 1952-12-30 | 0 | Details |
| US2619256A | Weigh feeder | Expired / Lapsed | 1949-12-09 | 1952-11-25 | 0 | Details |
| US2607077A | Mixing torpedo for plastics extruders | Expired / Lapsed | 1951-06-28 | 1952-08-19 | 0 | Details |
| US2604461A | Production of sulfonated alkenyl aromatic resins | Expired / Lapsed | 1950-07-22 | 1952-07-22 | 2 | Details |
| US2603838A | Method for preshrinking crystalline vinylidene chloride cop… | Expired / Lapsed | 1949-08-01 | 1952-07-22 | 2 | Details |
| US2596933A | Means for welding plastic films | Expired / Lapsed | 1951-01-31 | 1952-05-13 | 0 | Details |
| US2590812A | Siloxanes having hydrogen atoms directly attached to silico… | Expired / Lapsed | 1946-03-30 | 1952-03-25 | 2 | Details |
| US2582294A | Continuous method for cooling and shaping thermoplastics | Expired / Lapsed | 1947-10-31 | 1952-01-15 | 2 | Details |
| US2576977A | Method of making free-flowing cellular pellets of thermopla… | Expired / Lapsed | 1949-02-10 | 1951-12-04 | 2 | Details |
| US2567838A | Metallurgical apparatus | Expired / Lapsed | 1949-11-16 | 1951-09-11 | 0 | Details |
| US2565518A | Method of making abrasionresistant coatings | Expired / Lapsed | 1949-11-25 | 1951-08-28 | 2 | Details |
| US2565265A | Stabilized electrooptical system | Expired / Lapsed | 1949-06-30 | 1951-08-21 | 0 | Details |
| US2546938A | Ion exchange resins and process of treating a solution of a… | Expired / Lapsed | 1946-05-23 | 1951-03-27 | 2 | Details |
| US2543027A | Method of making crinkled fibers | Expired / Lapsed | 1948-09-18 | 1951-02-27 | 2 | Details |
| US2542973A | Method of making crinkled fibers | Expired / Lapsed | 1948-09-18 | 1951-02-27 | 2 | Details |
| US2541064A | Method of controlling the diameter and wall thickness of vi… | Expired / Lapsed | 1948-08-11 | 1951-02-13 | 0 | Details |
| US2540146A | Method for controlled blending of polystyrene with modifiers | Expired / Lapsed | 1948-05-27 | 1951-02-06 | 2 | Details |
| US2537977A | Method of making a shaped thermoplastic cellular product | Expired / Lapsed | 1948-07-15 | 1951-01-16 | 2 | Details |
| US2538002A | Container for and process of preserving perishable foodstuf… | Expired / Lapsed | 1947-11-29 | 1951-01-16 | 0 | Details |
| US2537951A | Composite bodies of insoluble copolymers and method of maki… | Expired / Lapsed | 1946-11-04 | 1951-01-16 | 2 | Details |
| US2535015A | Diphenol compound composition for coccidiosis control | Expired / Lapsed | 1948-06-19 | 1950-12-19 | 2 | Details |
| US2532245A | Thermoplastic compositions with reduced flow viscosity | Expired / Lapsed | 1949-08-26 | 1950-11-28 | 2 | Details |
| US2530409A | Method for polymerizing styrene | Expired / Lapsed | 1948-05-27 | 1950-11-21 | 0 | Details |
| US2530362A | Coagulation of nonelastic polymers | Expired / Lapsed | 1946-11-22 | 1950-11-14 | 2 | Details |
| US2523228A | Plant growth control materials | Expired / Lapsed | 1948-05-22 | 1950-09-19 | 2 | Details |
| US2521470A | Method of bonding cellular thermoplastic bodies | Expired / Lapsed | 1945-08-03 | 1950-09-05 | 2 | Details |
| US2515250A | Method of making and storing compositions comprising thermo… | Expired / Lapsed | 1947-11-07 | 1950-07-18 | 2 | Details |
| US2510853A | Methyl octadecyl dichlorosilane | Expired / Lapsed | 1946-06-06 | 1950-06-06 | 0 | Details |
| US2503819A | Continuous casting | Expired / Lapsed | 1945-12-08 | 1950-04-11 | 0 | Details |
| US2500149A | Sulfonation of copolymers of monovinyl-and polyvinyl-aromat… | Expired / Lapsed | 1947-02-21 | 1950-03-14 | 1 | Details |
| US2495352A | Well repair | Expired / Lapsed | 1945-12-12 | 1950-01-24 | 0 | Details |
| US2488571A | Production of polymeric vinylidene chloride film | Expired / Lapsed | 1947-12-11 | 1949-11-22 | 0 | Details |
| US2482748A | 4,4'-isopropylidene bis | Expired / Lapsed | 1948-05-28 | 1949-09-27 | 0 | Details |
| US2482062A | Storage battery separator of polystyrene fiber | Expired / Lapsed | 1945-01-19 | 1949-09-13 | 0 | Details |
| US2480082A | Method of packaging foods to be frozen | Expired / Lapsed | 1947-10-01 | 1949-08-23 | 0 | Details |
| US2477614A | Vinylidene chloride-vinyl chloride copolymer composition fo… | Expired / Lapsed | 1948-06-28 | 1949-08-02 | 0 | Details |
| US2477611A | Vinylidene chloride-vinyl chloride copolymer composition fo… | Expired / Lapsed | 1948-03-09 | 1949-08-02 | 0 | Details |
| US2476331A | Method of making methyl carboxymethyl cellulose | Expired / Lapsed | 1945-11-15 | 1949-07-19 | 0 | Details |
| US2476140A | Process for the manufacture of crystalline vinylidene chlor… | Expired / Lapsed | 1948-08-11 | 1949-07-12 | 0 | Details |
| US2474228A | Making proteinaceous and fatty foods resistant to microorga… | Expired / Lapsed | 1947-01-13 | 1949-06-28 | 0 | Details |
| US2471818A | Carboxylated resins and method of making same | Expired / Lapsed | 1944-11-04 | 1949-05-31 | 0 | Details |
| US2469999A | Mixing head for extrusion machines | Expired / Lapsed | 1945-05-30 | 1949-05-10 | 0 | Details |
| US2467133A | High-frequency electric field heating to produce uniform we… | Expired / Lapsed | 1946-08-31 | 1949-04-12 | 0 | Details |
| US2466675A | Production of sulfonated resin ion exchange agents in stabl… | Expired / Lapsed | 1945-04-02 | 1949-04-12 | 0 | Details |
| US2463573A | Vinylidene chloride-butadiene-vinyl chloride interpolymers | Expired / Lapsed | 1946-05-16 | 1949-03-08 | 0 | Details |
| US2457659A | Apparatus for high-speed welding of thermoplastic films | Expired / Lapsed | 1946-09-19 | 1948-12-28 | 0 | Details |
| US2450436A | Manufacture of cellular thermoplastic products | Expired / Lapsed | 1947-07-26 | 1948-10-05 | 0 | Details |
| US2449355A | Internal two-zone heat control for plastics extruders | Expired / Lapsed | 1947-07-28 | 1948-09-14 | 0 | Details |
| US2448029A | Method of preparing phenolsulfonic acid-formaldehyde ion ex… | Expired / Lapsed | 1947-02-24 | 1948-08-31 | 0 | Details |
| US2448433A | Making wrinkle-free film | Expired / Lapsed | 1945-09-10 | 1948-08-31 | 0 | Details |
| US2442319A | Process and catalyst for the dehydrogenation of olefines | Expired / Lapsed | 1944-04-03 | 1948-05-25 | 0 | Details |
| US2440664A | Making lap-welded articles from thermoplastic films | Expired / Lapsed | 1945-07-28 | 1948-04-27 | 0 | Details |
| US2436777A | Organofluorosilanes and method of making same | Expired / Lapsed | 1945-05-30 | 1948-02-24 | 0 | Details |
| US2434496A | Light stable compositions comprising polymeric vinylidene c… | Expired / Lapsed | 1945-03-02 | 1948-01-13 | 0 | Details |
| US2428608A | Plastic dielectric composition and shielded spark plug term… | Expired / Lapsed | 1942-11-02 | 1947-10-07 | 0 | Details |
| US2426604A | Removal of acetylenic hydrocarbons from diolefine-containin… | Expired / Lapsed | 1944-07-17 | 1947-09-02 | 0 | Details |
| US2415389A | Alkoxy end-blocked siloxanes and method of making same | Expired / Lapsed | 1944-05-31 | 1947-02-04 | 0 | Details |
| US2414776A | Apparatus for making pipe from thermoplastic resin | Expired / Lapsed | 1944-10-07 | 1947-01-21 | 0 | Details |
| US2413435A | Method of determining permeability of earth formations pene… | Expired / Lapsed | 1944-05-08 | 1946-12-31 | 0 | Details |
| US2409910A | Method of filling containers with resinous foam | Expired / Lapsed | 1944-11-29 | 1946-10-22 | 0 | Details |
| US2409861A | Process and agents for the recovery of magnesium ions from … | Expired / Lapsed | 1942-02-02 | 1946-10-22 | 0 | Details |
| US2409521A | Vinylidene chloride polymer extrusion | Expired / Lapsed | 1943-11-22 | 1946-10-15 | 0 | Details |
| US2405988A | Organo-silicon esters and materials treated therewith | Expired / Lapsed | 1943-12-10 | 1946-08-20 | 0 | Details |
| US2402016A | Sulphonium salts | Expired / Lapsed | 1944-10-02 | 1946-06-11 | 0 | Details |
| US2399592A | Method of making molded thermoplastic articles | Expired / Lapsed | 1943-09-09 | 1946-04-30 | 0 | Details |
| US2399125A | Well packer | Expired / Lapsed | 1939-07-21 | 1946-04-23 | 0 | Details |
| US2398736A | Polymeric products and preparation of same | Expired / Lapsed | 1944-03-04 | 1946-04-16 | 0 | Details |
| US2388206A | Release agent for film-casting and embossing operations | Expired / Lapsed | 1942-12-21 | 1945-10-30 | 0 | Details |
| US2386830A | Method and apparatus for continuous analysis and control of… | Expired / Lapsed | 1942-09-02 | 1945-10-16 | 0 | Details |
| US2386831A | Method and apparatus for continuous analysis of organic mix… | Expired / Lapsed | 1942-09-02 | 1945-10-16 | 0 | Details |
| US2385358A | Method of making fine fibers | Expired / Lapsed | 1944-09-15 | 1945-09-25 | 0 | Details |
| US2385256A | Vinylidene chloride compositions | Expired / Lapsed | 1941-07-18 | 1945-09-18 | 0 | Details |
| US2377810A | Crinkled polymeric vinylidene chloride fibers | Expired / Lapsed | 1942-10-30 | 1945-06-05 | 0 | Details |
| US2365952A | Machine for making plastic helicoidal structures | Expired / Lapsed | 1942-03-12 | 1944-12-26 | 0 | Details |
| US2361369A | Method of and apparatus for producing reticulated articles … | Expired / Lapsed | 1942-10-02 | 1944-10-31 | 0 | Details |
| US2361371A | Method of fabricating crystalline polymers | Expired / Lapsed | 1942-04-20 | 1944-10-31 | 0 | Details |
| US2361900A | Method of molding | Expired / Lapsed | 1941-10-13 | 1944-10-31 | 0 | Details |
| US2360269A | Germicidal compositions | Expired / Lapsed | 1942-02-19 | 1944-10-10 | 0 | Details |
| US2359759A | Purification and production of olefins | Expired / Lapsed | 1939-04-22 | 1944-10-10 | 0 | Details |
| US2359622A | Ester-ethers of bis-phenols | Expired / Lapsed | 1943-08-28 | 1944-10-03 | 0 | Details |
| US2357833A | Thermoplastic molding composition | Expired / Lapsed | 1941-10-20 | 1944-09-12 | 0 | Details |
| US2354634A | Mixing apparatus | Expired / Lapsed | 1942-02-04 | 1944-07-25 | 0 | Details |
| US2350325A | Unsaturated ester of alkoxy-aryloxy alcohols | Expired / Lapsed | 1941-09-25 | 1944-06-06 | 0 | Details |
| US2350326A | Condensation product of p-hydroxy benzoic acid | Expired / Lapsed | 1941-04-26 | 1944-06-06 | 0 | Details |
| US2348772A | Method of fabricating vinylidene chloride polymers | Expired / Lapsed | 1942-06-01 | 1944-05-16 | 0 | Details |
| US2347615A | Apparatus for treating wells | Expired / Lapsed | 1942-03-02 | 1944-04-25 | 0 | Details |
| US2345629A | Embossing crystalline polymeric material | Expired / Lapsed | 1940-12-06 | 1944-04-04 | 0 | Details |
| US2344511A | Treatment of crystalline vinylidene chloride polymers | Expired / Lapsed | 1941-04-17 | 1944-03-21 | 0 | Details |
| US2344785A | Photopolymerization method | Expired / Lapsed | 1940-08-03 | 1944-03-21 | 0 | Details |
| US2341175A | Insoluble polymers derived from styrene | Expired / Lapsed | 1940-03-15 | 1944-02-08 | 0 | Details |
| US2338610A | Method for making fibrous pads or mats | Expired / Lapsed | 1941-10-24 | 1944-01-04 | 0 | Details |
| US2333634A | Copolymerization of vinyl halides with vinylidene halides | Expired / Lapsed | 1940-08-03 | 1943-11-09 | 0 | Details |
| US2333633A | Polymerization method | Expired / Lapsed | 1940-08-03 | 1943-11-09 | 0 | Details |
| US2333635A | Method of polymerizing vinyl compounds | Expired / Lapsed | 1940-08-03 | 1943-11-09 | 0 | Details |
| US2332485A | Vinylidene chloride fibers | Expired / Lapsed | 1941-09-02 | 1943-10-19 | 0 | Details |
| US2331865A | Method of preparing cold-watersoluble powdered cellulose et… | Expired / Lapsed | 1942-03-20 | 1943-10-12 | 0 | Details |
| US2331859A | Method of making solutions of aluminum cellulose glycollate | Expired / Lapsed | 1941-03-06 | 1943-10-12 | 0 | Details |
| US2331858A | Preparing solutions of cellulose glycollic acid salts | Expired / Lapsed | 1941-03-06 | 1943-10-12 | 0 | Details |
| US2331265A | Ethers of bis-phenols | Expired / Lapsed | 1940-11-07 | 1943-10-05 | 0 | Details |
| US2331263A | Method of making co-polymers of styrene | Expired / Lapsed | 1939-11-02 | 1943-10-05 | 0 | Details |
| US2330227A | Parasiticidal composition and method of preparation | Expired / Lapsed | 1941-05-29 | 1943-09-28 | 0 | Details |
| US2329033A | Styrene copolymer plastic composition | Expired / Lapsed | 1939-06-05 | 1943-09-07 | 0 | Details |
| US2313985A | Method of molding plastics | Expired / Lapsed | 1940-05-20 | 1943-03-16 | 0 | Details |
| US2309370A | Heat treatment of vinylidene chloride polymers | Expired / Lapsed | 1940-12-12 | 1943-01-26 | 0 | Details |
| US2308692A | Greaseproof paper | Expired / Lapsed | 1941-03-06 | 1943-01-19 | 0 | Details |
| US2299230A | Positively locking fastener | Expired / Lapsed | 1942-07-17 | 1942-10-20 | 0 | Details |
| US2297709A | Hot-melt coating composition comprising cellulose ethers | Expired / Lapsed | 1939-05-16 | 1942-10-06 | 0 | Details |
| US2294294A | Treatment of wells | Expired / Lapsed | 1937-09-27 | 1942-08-25 | 0 | Details |
| US2293389A | Knot strength | Expired / Lapsed | 1941-05-15 | 1942-08-18 | 0 | Details |
| US2291670A | Method of coating wire and the like | Expired / Lapsed | 1939-08-31 | 1942-08-04 | 0 | Details |
| US2288995A | Surface treatment of magnesium and its alloys | Expired / Lapsed | 1940-04-13 | 1942-07-07 | 0 | Details |
| US2285626A | Substituted phenol | Expired / Lapsed | 1940-04-27 | 1942-06-09 | 0 | Details |
| US2276691A | Polymerization method | Expired / Lapsed | 1939-12-13 | 1942-03-17 | 0 | Details |
| US2270186A | Film drawing and trimming machine | Expired / Lapsed | 1940-10-04 | 1942-01-13 | 0 | Details |
| US2270185A | Simultaneous manufacture of containers and closures | Expired / Lapsed | 1940-08-15 | 1942-01-13 | 0 | Details |
| US2270199A | Graphite article | Expired / Lapsed | 1940-01-05 | 1942-01-13 | 0 | Details |
| US2270182A | Manufacture of purified vinyl aromatic resins in powdered f… | Expired / Lapsed | 1939-05-19 | 1942-01-13 | 0 | Details |
| US2264291A | Vinylidene chloride composition stable to light | Expired / Lapsed | 1940-09-19 | 1941-12-02 | 0 | Details |
| US2260337A | Alkoxy-aryl borate | Expired / Lapsed | 1939-10-16 | 1941-10-28 | 0 | Details |
| US2256160A | Making polymerized vinyl aromatic articles | Expired / Lapsed | 1938-11-18 | 1941-09-16 | 0 | Details |
| US2249673A | Cellulose ether recovery | Expired / Lapsed | 1937-09-28 | 1941-07-15 | 0 | Details |
| US2244341A | Method for dispensing methyl bromide | Expired / Lapsed | 1937-12-17 | 1941-06-03 | 0 | Details |
| US2238020A | Vinylidene chloride copolymer | Expired / Lapsed | 1939-06-02 | 1941-04-08 | 0 | Details |
| US2237315A | Coating filamentous articles with vinylidene chloride compo… | Expired / Lapsed | 1938-08-24 | 1941-04-08 | 0 | Details |
| US2236836A | Method of lining well bores | Expired / Lapsed | 1938-12-24 | 1941-04-01 | 0 | Details |
| US2235782A | Soluble co-polymers of vinyl chloride and vinylidene chlori… | Expired / Lapsed | 1939-04-01 | 1941-03-18 | 0 | Details |
| US2233442A | Polymeric vinylidene chloride article | Expired / Lapsed | 1938-05-31 | 1941-03-04 | 0 | Details |
| US2232927A | Making unsaturated ethers of cellulose | Expired / Lapsed | 1939-01-28 | 1941-02-25 | 0 | Details |
| US2224852A | Molding polystyrene and related resins | Expired / Lapsed | 1938-06-28 | 1940-12-17 | 0 | Details |
| US2222012A | Alkylation of aromatic compounds | Expired / Lapsed | 1938-04-12 | 1940-11-19 | 0 | Details |
| US2220525A | Multiply fabric article | Expired / Lapsed | 1938-05-19 | 1940-11-05 | 0 | Details |
| US2220545A | Method of welding thermoplastic materials | Expired / Lapsed | 1937-11-20 | 1940-11-05 | 0 | Details |
| US2219319A | Treatment of wells | Expired / Lapsed | 1938-05-18 | 1940-10-29 | 0 | Details |
| US2200255A | Chlorination | Expired / Lapsed | 1938-11-21 | 1940-05-14 | 0 | Details |
| US2200254A | Chlorination | Expired / Lapsed | 1937-06-01 | 1940-05-14 | 0 | Details |
| US2196579A | Polymeric vinylidene chloride compositions | Expired / Lapsed | 1937-10-06 | 1940-04-09 | 0 | Details |
| US2192197A | Dinitro-alkyl-phenol | Expired / Lapsed | 1936-09-03 | 1940-03-05 | 0 | Details |
| US2176091A | Fabricating vinylidene chloride polymeric products | Expired / Lapsed | 1937-10-23 | 1939-10-17 | 0 | Details |
| US2174737A | Preparation of 1,1,2-trichloroethane | Expired / Lapsed | 1936-02-24 | 1939-10-03 | 0 | Details |
| US2160934A | Polymerization of vinylidene chloride | Expired / Lapsed | 1937-09-16 | 1939-06-06 | 0 | Details |
| US2158957A | Hydroxy-alkyl ethers of substituted phenols | Expired / Lapsed | 1937-02-20 | 1939-05-16 | 0 | Details |
| US2157009A | Phenylmercuric aliphatic hydroxy carboxylates and method of… | Expired / Lapsed | 1933-07-31 | 1939-05-02 | 0 | Details |
| US2130525A | Hydroxy alkyl ethers of hydrogenated hydroxy diphenyl compo… | Expired / Lapsed | 1937-02-20 | 1938-09-20 | 0 | Details |
| US2121731A | Cellulose ether recovery | Expired / Lapsed | 1936-07-30 | 1938-06-21 | 0 | Details |
| US2107005A | Cellulose ether recovery | Expired / Lapsed | 1937-02-05 | 1938-02-01 | 0 | Details |
| US2097457A | Nitrogenous fertilizer and process of making same | Expired / Lapsed | 1935-08-15 | 1937-11-02 | 0 | Details |
| US1996643A | Improved electrode and method of making same | Expired / Lapsed | 1931-08-10 | 1935-04-02 | 0 | Details |
| US1959286A | Method of storing and using heat and means therefor | Expired / Lapsed | 1930-07-07 | 1934-05-15 | 0 | Details |
| US1954438A | Method of chlorinating aliphatic hydrocarbons | Expired / Lapsed | 1932-10-10 | 1934-04-10 | 0 | Details |
| US1942354A | Article of manufacture | Expired / Lapsed | 1930-12-11 | 1934-01-02 | 0 | Details |
| US1932518A | Method of making primary amino compounds | Expired / Lapsed | 1928-08-31 | 1933-10-31 | 0 | Details |
| US1930756A | Rotary apparatus for contacting gaseous and nongaseous mate… | Expired / Lapsed | 1932-07-01 | 1933-10-17 | 0 | Details |
| US1923710A | Apparatus for producing alpha composite reenforced sheet | Expired / Lapsed | 1930-03-19 | 1933-08-22 | 0 | Details |
| US1877504A | Treatment of deep wells | Expired / Lapsed | 1932-06-30 | 1932-09-13 | 0 | Details |
| US1867071A | Article of manufacture | Expired / Lapsed | 1929-03-08 | 1932-07-12 | 0 | Details |
| US1866160A | Gasket joint | Expired / Lapsed | 1927-08-11 | 1932-07-05 | 0 | Details |
| US1863775A | Method and means for opening bags | Expired / Lapsed | 1928-03-28 | 1932-06-21 | 0 | Details |
| US1856912A | Improved method of shooting wells | Expired / Lapsed | 1930-06-04 | 1932-05-03 | 0 | Details |
| US1753281A | Bag manufacture | Expired / Lapsed | 1925-11-09 | 1930-04-08 | 0 | Details |
| US1716403A | Bag | Expired / Lapsed | 1926-01-23 | 1929-06-11 | 0 | Details |
| US1515082A | Method of making light metal alloys | Expired / Lapsed | 1920-05-08 | 1924-11-11 | 0 | Details |
| US1411422A | Lachrymatory gas | Expired / Lapsed | 1920-03-31 | 1922-04-04 | 0 | Details |
| US1284618A | Process of and apparatus for electrolytic production of cau… | Expired / Lapsed | 1915-08-12 | 1918-11-12 | 0 | Details |
| US1272522A | Method of making benzaldehyde. | Expired / Lapsed | 1916-09-18 | 1918-07-16 | 0 | Details |