Standard Oil Co
Standard OActive Patents
0
Total Holdings
208
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| EP0177300A2 | Bypass diode assembly for photovoltaic modules | Expired / Lapsed | 1985-09-27 | — | 9 | Details |
| FR2209803A1 | FR2209803A1 - - Google Patents | Expired / Lapsed | 1973-12-06 | — | 0 | Details |
| US4955328A | Leading piston engine with two cylinders interconnected thr… | Expired / Lapsed | 1989-10-31 | 1990-09-11 | 2 | Details |
| US4891164A | Method for separating and immobilizing radioactive materials | Expired / Lapsed | 1989-01-06 | 1990-01-02 | 68 | Details |
| US4784769A | Plasma polymerized acetonitrile protective coatings and met… | Expired / Lapsed | 1986-11-21 | 1988-11-15 | 10 | Details |
| US4671852A | Method of forming suspended gate, chemically sensitive fiel… | Expired / Lapsed | 1986-05-07 | 1987-06-09 | 20 | Details |
| US4405547A | Method of coextruding diverse materials | Expired / Lapsed | 1982-04-19 | 1983-09-20 | 9 | Details |
| US4397919A | Explosion resistant battery cells | Expired / Lapsed | 1981-05-19 | 1983-08-09 | 16 | Details |
| US4289668A | Polymer systems plasticized with hydroxy fatty acids | Expired / Lapsed | 1980-10-14 | 1981-09-15 | 23 | Details |
| US4281981A | Die assembly providing uniform pressure and flow | Expired / Lapsed | 1980-02-25 | 1981-08-04 | 6 | Details |
| US4042153A | Liquid dropping device | Expired / Lapsed | 1975-11-17 | 1977-08-16 | 4 | Details |
| US3944706A | Self-bonding polyethylene trimellitate imide varnish | Expired / Lapsed | 1974-08-01 | 1976-03-16 | 8 | Details |
| US3940469A | Process for forming hollow fibers | Expired / Lapsed | 1973-11-26 | 1976-02-24 | 14 | Details |
| US3908759A | Sidetracking tool | Expired / Lapsed | 1974-05-22 | 1975-09-30 | 4 | Details |
| US3847878A | Process for preparation of polyamide-imides and shaped arti… | Expired / Lapsed | 1973-04-09 | 1974-11-12 | 2 | Details |
| US3786041A | Melamine-formaldehyde resin containing alumina hydrate | Expired / Lapsed | 1972-12-08 | 1974-01-15 | 0 | Details |
| US3781264A | Process for texturizing microbial cells by alkali-acid trea… | Expired / Lapsed | 1970-10-29 | 1973-12-25 | 0 | Details |
| US3663260A | Talc filled metallizable polyolefins | Expired / Lapsed | 1970-07-20 | 1972-05-16 | 8 | Details |
| US3616294A | Surface treatment of plastics with mineral acids containing… | Expired / Lapsed | 1967-05-03 | 1971-10-26 | 2 | Details |
| US3580414A | Fueling device for automobiles and the like | Expired / Lapsed | 1968-12-20 | 1971-05-25 | 13 | Details |
| US3546152A | Process for reducing viscosity of polytrimellitamide-imide … | Expired / Lapsed | 1968-08-06 | 1970-12-08 | 0 | Details |
| US3451848A | Method of coating magnet wire with a polytrimellitamide | Expired / Lapsed | 1966-03-31 | 1969-06-24 | 0 | Details |
| US3408154A | Spinner for a liquid fuel burner | Expired / Lapsed | 1967-02-17 | 1968-10-29 | 0 | Details |
| US3360401A | Process for converting chemical energy into electrical ener… | Expired / Lapsed | 1965-09-29 | 1967-12-26 | 2 | Details |
| US3351602A | Film-forming acrylonitrile polymer and latex thereof | Expired / Lapsed | 1965-08-19 | 1967-11-07 | 2 | Details |
| US3276910A | Ion transfer medium for electrochemical reaction apparatus | Expired / Lapsed | 1961-10-12 | 1966-10-04 | 2 | Details |
| US3252933A | Mixture of copolymers of nitrile-monoolefin and nitrile-die… | Expired / Lapsed | 1963-06-21 | 1966-05-24 | 2 | Details |
| US3234846A | Continuously recording turbidity meter | Expired / Lapsed | 1959-11-18 | 1966-02-15 | 0 | Details |
| US3230184A | Glass microsphere and fiber filled polyester resin composit… | Expired / Lapsed | 1962-03-06 | 1966-01-18 | 2 | Details |
| US3223666A | Polyester using benzene tribasic acid | Expired / Lapsed | 1962-09-13 | 1965-12-14 | 2 | Details |
| US3137737A | Telomerization of unsaturated hydrocarbons with polyoxyalky… | Expired / Lapsed | 1959-09-04 | 1964-06-16 | 0 | Details |
| US3135591A | Separation of helium from a gaseous mixture by means of a n… | Expired / Lapsed | 1960-09-08 | 1964-06-02 | 1 | Details |
| US3109868A | Coupling of aromatic rings | Expired / Lapsed | 1961-10-30 | 1963-11-05 | 2 | Details |
| US3091612A | Alkylated methylol benzoguanamine | Expired / Lapsed | 1961-08-07 | 1963-05-28 | 2 | Details |
| US3080746A | Apparatus and method for testing liquids | Expired / Lapsed | 1959-10-27 | 1963-03-12 | 2 | Details |
| US3080479A | Gamma ray caliper | Expired / Lapsed | 1959-11-27 | 1963-03-05 | 0 | Details |
| US3076417A | Positive displacement pump | Expired / Lapsed | 1959-10-29 | 1963-02-05 | 2 | Details |
| US3070988A | Oxygen analyzer-standardizer | Expired / Lapsed | 1957-10-15 | 1963-01-01 | 2 | Details |
| US3067158A | Water-soluble polyester and aqueous solution of same | Expired / Lapsed | 1960-03-17 | 1962-12-04 | 3 | Details |
| US3063286A | Sample introduction system for gas chromatography apparatus | Expired / Lapsed | 1959-07-14 | 1962-11-13 | 2 | Details |
| US3048336A | Electronic integrator | Expired / Lapsed | 1958-09-23 | 1962-08-07 | 0 | Details |
| US3047524A | Glycolic acid polymer | Expired / Lapsed | 1959-03-19 | 1962-07-31 | 2 | Details |
| US3030215A | Hollow glass particles and method of producing the same | Expired / Lapsed | 1959-12-02 | 1962-04-17 | 2 | Details |
| US3029642A | Transistor thermistor telemetering device | Expired / Lapsed | 1954-12-22 | 1962-04-17 | 0 | Details |
| US3007784A | Fuel oil composition | Expired / Lapsed | 1960-03-28 | 1961-11-07 | 2 | Details |
| US3006972A | Coupling of aromatic rings | Expired / Lapsed | 1959-08-21 | 1961-10-31 | 2 | Details |
| US3005911A | Gaseous mixture analyzer | Expired / Lapsed | 1957-12-17 | 1961-10-24 | 0 | Details |
| US2993366A | Conductometric corrosion test probe with replaceable test s… | Expired / Lapsed | 1959-07-02 | 1961-07-25 | 0 | Details |
| US2992679A | Vented extruder structure for removing volatiles from solid… | Expired / Lapsed | 1958-12-15 | 1961-07-18 | 0 | Details |
| US2984623A | Permeation process using irradiated polyethylene membrane | Expired / Lapsed | 1956-10-22 | 1961-05-16 | 2 | Details |
| US2981680A | Separation of mixtures | Expired / Lapsed | 1957-03-28 | 1961-04-25 | 2 | Details |
| US2975282A | Automatic credit card accounting system | Expired / Lapsed | 1957-08-06 | 1961-03-14 | 0 | Details |
| US2954385A | Production of maleic and phthalic anhydrides | Expired / Lapsed | 1957-10-02 | 1960-09-27 | 2 | Details |
| US2953963A | Comparison colorimeter | Expired / Lapsed | 1954-03-19 | 1960-09-27 | 0 | Details |
| US2941007A | Process for the oxidation of olefins | Expired / Lapsed | 1957-06-10 | 1960-06-14 | 2 | Details |
| US2881213A | Process for the conversion of acrolein and methacrolein to … | Expired / Lapsed | 1957-12-17 | 1959-04-07 | 2 | Details |
| US2881156A | Catalytic conversion and catalysts | Expired / Lapsed | 1956-03-28 | 1959-04-07 | 2 | Details |
| US2861895A | Paving composition of low thermal conductivity | Expired / Lapsed | 1955-12-30 | 1958-11-25 | 2 | Details |
| US2843577A | Process and catalyst for polymerization using polyvalent me… | Expired / Lapsed | 1955-10-17 | 1958-07-15 | 4 | Details |
| US2842267A | Fuel system emergency pump and trap | Expired / Lapsed | 1955-05-23 | 1958-07-08 | 0 | Details |
| US2840551A | Olefin polymerization with catalysts prepared from boron co… | Expired / Lapsed | 1955-08-18 | 1958-06-24 | 2 | Details |
| US2834768A | Catalytic polymerization of alkenes to normally solid polym… | Expired / Lapsed | 1955-08-18 | 1958-05-13 | 2 | Details |
| US2828265A | Complex of polyoxyalkylene compounds with metal salts and o… | Expired / Lapsed | 1952-02-05 | 1958-03-25 | 2 | Details |
| US2812440A | Gamma ray wall thickness measuring device | Expired / Lapsed | 1956-03-29 | 1957-11-05 | 2 | Details |
| US2809934A | Detergent lubricants and lubricating oil additives and proc… | Expired / Lapsed | 1953-10-01 | 1957-10-15 | 2 | Details |
| US2805574A | Wide range flow meter | Expired / Lapsed | 1952-09-22 | 1957-09-10 | 0 | Details |
| US2797201A | Process of producing hollow particles and resulting product | Expired / Lapsed | 1953-10-02 | 1957-06-25 | 2 | Details |
| US2790833A | Method of preparing aryl polysulfides | Expired / Lapsed | 1954-09-13 | 1957-04-30 | 2 | Details |
| US2768306A | Slit-control equipment | Expired / Lapsed | 1952-11-26 | 1956-10-23 | 0 | Details |
| US2762790A | Polymerization of aliphatic conjugated diolefins | Expired / Lapsed | 1952-12-26 | 1956-09-11 | 2 | Details |
| US2729970A | Carbonization testing apparatus | Expired / Lapsed | 1952-10-28 | 1956-01-10 | 0 | Details |
| US2728758A | Olefin conversion with group 6a metal oxides and reactive m… | Expired / Lapsed | 1954-02-18 | 1955-12-27 | 2 | Details |
| US2728757A | Polymerization process with group v-a metal and metal boroh… | Expired / Lapsed | 1953-08-31 | 1955-12-27 | 2 | Details |
| US2728753A | Improved product separation in ethylene polymerization proc… | Expired / Lapsed | 1952-05-16 | 1955-12-27 | 2 | Details |
| US2727023A | Ethylene polymerization | Expired / Lapsed | 1951-12-01 | 1955-12-13 | 1 | Details |
| US2726231A | Preparation of solid polymers from ethylene and the like in… | Expired / Lapsed | 1952-12-06 | 1955-12-06 | 2 | Details |
| US2712885A | Selective fluid metering system | Expired / Lapsed | 1949-05-10 | 1955-07-12 | 0 | Details |
| US2712355A | Hydraulic fracturing of earth formations | Expired / Lapsed | 1949-12-20 | 1955-07-05 | 2 | Details |
| US2702897A | Telemetering wet test meter | Expired / Lapsed | 1951-02-28 | 1955-02-22 | 0 | Details |
| US2700111A | Radiation source | Expired / Lapsed | 1952-09-26 | 1955-01-18 | 0 | Details |
| US2696738A | Liquid level indicator | Expired / Lapsed | 1949-06-30 | 1954-12-14 | 0 | Details |
| US2692257A | Ethylene polymerization with conditioned alumina-molybdena … | Expired / Lapsed | 1951-04-28 | 1954-10-19 | 2 | Details |
| US2692261A | Polymerization of ethylene with nickel or cobalt on activat… | Expired / Lapsed | 1951-04-25 | 1954-10-19 | 1 | Details |
| US2691647A | Conversion of ethylene and/or propylene to solid polymers i… | Expired / Lapsed | 1952-12-06 | 1954-10-12 | 2 | Details |
| US2677271A | Apparatus for testing materials having plastic flow charact… | Expired / Lapsed | 1950-05-06 | 1954-05-04 | 0 | Details |
| US2671342A | Vapor pressure determination by expansion cooling | Expired / Lapsed | 1951-05-26 | 1954-03-09 | 2 | Details |
| US2669435A | Immersion heater | Expired / Lapsed | 1951-04-27 | 1954-02-16 | 0 | Details |
| US2668098A | Gelling normally liquid hydrocarbons | Expired / Lapsed | 1950-11-18 | 1954-02-02 | 2 | Details |
| US2658059A | Ethylene polymerization in the vapor phase | Expired / Lapsed | 1950-04-27 | 1953-11-03 | 1 | Details |
| US2634360A | Analytical apparatus for determination of sulfur | Expired / Lapsed | 1950-09-21 | 1953-04-07 | 1 | Details |
| US2601249A | Pipe line scraper and location transmitter | Expired / Lapsed | 1950-06-27 | 1952-06-24 | 0 | Details |
| US2541069A | Liquid thermal diffusion apparatus | Expired / Lapsed | 1947-06-07 | 1951-02-13 | 0 | Details |
| US2540377A | Apparatus for determining vapor pressure | Expired / Lapsed | 1947-03-25 | 1951-02-06 | 0 | Details |
| US2521322A | Means for testing fuel performance | Expired / Lapsed | 1945-12-08 | 1950-09-05 | 0 | Details |
| US2521195A | Fluidized solids conversion system | Expired / Lapsed | 1945-09-11 | 1950-09-05 | 2 | Details |
| US2520682A | Method and mold for making candles | Expired / Lapsed | 1948-05-28 | 1950-08-29 | 0 | Details |
| US2477751A | Apparatus for suspended catalyst operations | Expired / Lapsed | 1945-06-29 | 1949-08-02 | 0 | Details |
| US2475643A | Ethylene polymerization process | Expired / Lapsed | 1946-12-31 | 1949-07-12 | 0 | Details |
| US2475628A | Ethylene polymerization process | Expired / Lapsed | 1946-12-31 | 1949-07-12 | 0 | Details |
| US2464812A | Catalytic conversion system | Expired / Lapsed | 1942-01-30 | 1949-03-22 | 0 | Details |
| US2450394A | Preparation of spheroidal catalysts | Expired / Lapsed | 1943-07-31 | 1948-09-28 | 0 | Details |
| US2447505A | Hydrocarbon synthesis with fluidized catalyst regeneration | Expired / Lapsed | 1944-04-13 | 1948-08-24 | 0 | Details |
| US2444947A | Lubricant | Expired / Lapsed | 1945-05-17 | 1948-07-13 | 0 | Details |
| US2440542A | Volatile fluoride recovery | Expired / Lapsed | 1942-07-17 | 1948-04-27 | 0 | Details |
| US2431630A | Method and apparatus for regeneration of catalyst | Expired / Lapsed | 1941-10-30 | 1947-11-25 | 0 | Details |
| US2430443A | Olefin oxides | Expired / Lapsed | 1943-12-16 | 1947-11-11 | 0 | Details |
| US2424467A | Catalytic conversion and catalyst drying | Expired / Lapsed | 1942-02-28 | 1947-07-22 | 0 | Details |
| US2412634A | Lubricant | Expired / Lapsed | 1945-12-11 | 1946-12-17 | 0 | Details |
| US2405395A | Acetylene process | Expired / Lapsed | 1943-07-31 | 1946-08-06 | 0 | Details |
| US2394814A | Process for handling fluent solids | Expired / Lapsed | 1941-12-31 | 1946-02-12 | 0 | Details |
| US2393909A | Chemical reaction with fluidized solids | Expired / Lapsed | 1945-04-02 | 1946-01-29 | 0 | Details |
| US2393636A | Conversion of hydrocarbons with suspended catalysts | Expired / Lapsed | 1941-08-27 | 1946-01-29 | 0 | Details |
| US2392620A | Identifying petroleum products | Expired / Lapsed | 1942-08-20 | 1946-01-08 | 0 | Details |
| US2390621A | Treating olefin polymers | Expired / Lapsed | 1942-03-30 | 1945-12-11 | 0 | Details |
| US2387798A | Continuous catalytic conversion of hydrocarbons | Expired / Lapsed | 1938-01-27 | 1945-10-30 | 0 | Details |
| US2383033A | Lubricants | Expired / Lapsed | 1942-11-02 | 1945-08-21 | 0 | Details |
| US2378342A | Catalytic conversion process and apparatus | Expired / Lapsed | 1941-12-31 | 1945-06-12 | 0 | Details |
| US2376341A | Apparatus for liquid contact for fractionating, etc. | Expired / Lapsed | 1942-02-19 | 1945-05-22 | 0 | Details |
| US2375336A | Vapor and liquid contacting apparatus | Expired / Lapsed | 1943-03-17 | 1945-05-08 | 0 | Details |
| US2375321A | Process for isomerizing paraffin hydrocarbons using an alum… | Expired / Lapsed | 1941-12-15 | 1945-05-08 | 0 | Details |
| US2373787A | Slushing compositions | Expired / Lapsed | 1943-06-24 | 1945-04-17 | 0 | Details |
| US2373008A | Oxidation of organic compounds and manufacture of phthalic … | Expired / Lapsed | 1941-06-27 | 1945-04-03 | 0 | Details |
| US2372244A | Esters of acids of phosphorus | Expired / Lapsed | 1941-09-24 | 1945-03-27 | 0 | Details |
| US2367694A | Powdered solids stripping system | Expired / Lapsed | 1942-06-25 | 1945-01-23 | 0 | Details |
| US2367281A | Catalytic conversion system | Expired / Lapsed | 1941-09-30 | 1945-01-16 | 0 | Details |
| US2366372A | Transferring catalysts | Expired / Lapsed | 1941-09-11 | 1945-01-02 | 0 | Details |
| US2361978A | Catalytic cracking system | Expired / Lapsed | 1942-02-28 | 1944-11-07 | 0 | Details |
| US2349574A | Catalytic conversion operation | Expired / Lapsed | 1940-08-21 | 1944-05-23 | 0 | Details |
| US2348418A | Catalytic process | Expired / Lapsed | 1940-11-20 | 1944-05-09 | 0 | Details |
| US2347747A | Suspended catalyst technique | Expired / Lapsed | 1939-12-30 | 1944-05-02 | 0 | Details |
| US2346157A | Compounded oil | Expired / Lapsed | 1942-02-16 | 1944-04-11 | 0 | Details |
| US2346154A | Compounded hydrocarbon oil | Expired / Lapsed | 1940-08-02 | 1944-04-11 | 0 | Details |
| US2345600A | Alumina gel catalysis | Expired / Lapsed | 1942-08-07 | 1944-04-04 | 0 | Details |
| US2344770A | Catalyst regeneration control | Expired / Lapsed | 1941-12-15 | 1944-03-21 | 0 | Details |
| US2342165A | Processing well fluids | Expired / Lapsed | 1939-12-20 | 1944-02-22 | 0 | Details |
| US2332965A | Strainer | Expired / Lapsed | 1941-10-27 | 1943-10-26 | 0 | Details |
| US2327175A | Catalyst control in hydrocarbon conversion | Expired / Lapsed | 1941-10-31 | 1943-08-17 | 0 | Details |
| US2325611A | Catalytic treatment of hydrocarbon oils | Expired / Lapsed | 1940-12-23 | 1943-08-03 | 0 | Details |
| US2322863A | Dehydroaromatization and hydroforming | Expired / Lapsed | 1939-09-13 | 1943-06-29 | 0 | Details |
| US2320562A | Regeneration apparatus | Expired / Lapsed | 1940-12-20 | 1943-06-01 | 0 | Details |
| US2312006A | Catalytic conversion | Expired / Lapsed | 1938-10-21 | 1943-02-23 | 0 | Details |
| US2308502A | Compounded oil | Expired / Lapsed | 1940-08-02 | 1943-01-19 | 0 | Details |
| US2303680A | Catalyst recovery | Expired / Lapsed | 1940-06-29 | 1942-12-01 | 0 | Details |
| US2302209A | Catalytic conversion system | Expired / Lapsed | 1940-12-16 | 1942-11-17 | 0 | Details |
| US2301044A | Catalyzed hydrocarbon reaction | Expired / Lapsed | 1939-09-13 | 1942-11-03 | 0 | Details |
| US2289716A | Catalytic motor fuel production | Expired / Lapsed | 1939-10-19 | 1942-07-14 | 0 | Details |
| US2288874A | Conversion of hydrocarbons with siliceous catalysts | Expired / Lapsed | 1939-12-30 | 1942-07-07 | 0 | Details |
| US2284468A | Hydrocarbon synthesis | Expired / Lapsed | 1939-02-06 | 1942-05-26 | 0 | Details |
| US2280060A | Cake-inhibiting catalyst | Expired / Lapsed | 1939-03-21 | 1942-04-21 | 0 | Details |
| US2274633A | Catalytically treating hydrocarbons | Expired / Lapsed | 1940-02-21 | 1942-03-03 | 0 | Details |
| US2273075A | Powdered catalyst system | Expired / Lapsed | 1940-11-30 | 1942-02-17 | 0 | Details |
| US2269760A | Detonation indicator | Expired / Lapsed | 1939-12-26 | 1942-01-13 | 0 | Details |
| US2266012A | Production of branched-chain paraffin hydrocarbons | Expired / Lapsed | 1938-12-14 | 1941-12-16 | 0 | Details |
| US2264999A | Manufacture of lubricants | Expired / Lapsed | 1939-07-15 | 1941-12-02 | 0 | Details |
| US2263102A | Decolorizing oil | Expired / Lapsed | 1939-12-15 | 1941-11-18 | 0 | Details |
| US2252984A | Compounded hydrocarbon oil | Expired / Lapsed | 1939-05-06 | 1941-08-19 | 0 | Details |
| US2249924A | Catalytic conversion of hydrocarbons | Expired / Lapsed | 1937-11-22 | 1941-07-22 | 0 | Details |
| US2246703A | Alkylation | Expired / Lapsed | 1938-12-29 | 1941-06-24 | 0 | Details |
| US2229858A | Lubricant manufacture | Expired / Lapsed | 1938-10-22 | 1941-01-28 | 0 | Details |
| US2228661A | Compounded oil | Expired / Lapsed | 1938-10-08 | 1941-01-14 | 0 | Details |
| US2213331A | Chlorinated synthetic resin | Expired / Lapsed | 1936-03-04 | 1940-09-03 | 0 | Details |
| US2211990A | Preparation of organic sulphur compounds | Expired / Lapsed | 1937-08-28 | 1940-08-20 | 0 | Details |
| US2209458A | Motor fuel | Expired / Lapsed | 1938-11-30 | 1940-07-30 | 0 | Details |
| US2209464A | Lubricant | Expired / Lapsed | 1937-09-17 | 1940-07-30 | 0 | Details |
| US2206021A | Catalytic cracking and cracking catalysts | Expired / Lapsed | 1937-12-31 | 1940-07-02 | 0 | Details |
| US2204601A | Compounded lubricant | Expired / Lapsed | 1937-02-23 | 1940-06-18 | 0 | Details |
| US2197742A | Apparatus for selective coating of articles | Expired / Lapsed | 1937-08-21 | 1940-04-16 | 0 | Details |
| US2194341A | Pneumatic apparatus | Expired / Lapsed | 1937-06-25 | 1940-03-19 | 0 | Details |
| US2187871A | Underwater drilling | Expired / Lapsed | 1937-08-09 | 1940-01-23 | 0 | Details |
| US2178447A | Laminated structural materials | Expired / Lapsed | 1936-01-11 | 1939-10-31 | 0 | Details |
| US2171672A | Underwater drilling | Expired / Lapsed | 1937-09-30 | 1939-09-05 | 0 | Details |
| US2172146A | Manufacture of iso-butane | Expired / Lapsed | 1935-07-20 | 1939-09-05 | 0 | Details |
| US2154098A | Extreme pressure lubricant | Expired / Lapsed | 1937-08-16 | 1939-04-11 | 0 | Details |
| US2154089A | Printing ink | Expired / Lapsed | 1935-11-05 | 1939-04-11 | 0 | Details |
| US2148115A | Olefin polymerization | Expired / Lapsed | 1936-06-19 | 1939-02-21 | 0 | Details |
| US2122904A | Tamperproof can | Expired / Lapsed | 1936-06-02 | 1938-07-05 | 0 | Details |
| US2120810A | Solvent fractionation | Expired / Lapsed | 1933-07-31 | 1938-06-14 | 0 | Details |
| US2108643A | Grease | Expired / Lapsed | 1935-12-31 | 1938-02-15 | 0 | Details |
| US2108644A | Grease | Expired / Lapsed | 1934-03-22 | 1938-02-15 | 0 | Details |
| US2072382A | Counter current contactor | Expired / Lapsed | 1935-03-28 | 1937-03-02 | 0 | Details |
| US2065128A | Process and apparatus for dispensing gasoline | Expired / Lapsed | 1932-02-13 | 1936-12-22 | 0 | Details |
| US2064451A | Seismic surveying | Expired / Lapsed | 1935-08-15 | 1936-12-15 | 0 | Details |
| US2063789A | Countercurrent apparatus for treating petroleum oil | Expired / Lapsed | 1935-06-14 | 1936-12-08 | 0 | Details |
| US2063575A | Dispersing of phenolphthalein in mineral lubricating oils | Expired / Lapsed | 1934-03-31 | 1936-12-08 | 0 | Details |
| US2044866A | Volume measuring device | Expired / Lapsed | 1934-09-24 | 1936-06-23 | 0 | Details |
| US2038956A | Well treating | Expired / Lapsed | 1934-01-02 | 1936-04-28 | 0 | Details |
| US2029690A | Process and apparatus for contacting two liquids | Expired / Lapsed | 1933-07-10 | 1936-02-04 | 0 | Details |
| US2017327A | Dry cleaning fluid | Expired / Lapsed | 1932-12-09 | 1935-10-15 | 0 | Details |
| US1993973A | Handling sulphur | Expired / Lapsed | 1931-07-20 | 1935-03-12 | 0 | Details |
| US1990969A | Well treatment | Expired / Lapsed | 1933-03-16 | 1935-02-12 | 0 | Details |
| US1990365A | Top cylinder lubricant | Expired / Lapsed | 1932-03-21 | 1935-02-05 | 0 | Details |
| US1964200A | Decorative candle | Expired / Lapsed | 1932-12-08 | 1934-06-26 | 0 | Details |
| US1964641A | Foam prevention | Expired / Lapsed | 1932-06-30 | 1934-06-26 | 0 | Details |
| US1958547A | Vacuum distillation | Expired / Lapsed | 1930-04-17 | 1934-05-15 | 0 | Details |
| US1948007A | Means for preventing corrosion of metallic objects | Expired / Lapsed | 1931-06-30 | 1934-02-20 | 0 | Details |
| US1946118A | Chamber coil connection | Expired / Lapsed | 1931-02-09 | 1934-02-06 | 0 | Details |
| US1944857A | Quick freezing process and refrigerant | Expired / Lapsed | 1931-06-19 | 1934-01-23 | 0 | Details |
| US1905185A | Heat transfer | Expired / Lapsed | 1927-09-02 | 1933-04-25 | 0 | Details |
| US1846877A | Receptacle evacuating apparatus | Expired / Lapsed | 1926-10-25 | 1932-02-23 | 0 | Details |
| US1825378A | Valve | Expired / Lapsed | 1926-05-27 | 1931-09-29 | 0 | Details |
| US1824523A | Sulphurized oils | Expired / Lapsed | 1929-08-08 | 1931-09-22 | 0 | Details |
| US1818623A | Filter press leaf | Expired / Lapsed | 1928-04-13 | 1931-08-11 | 0 | Details |
| US1714184A | Method of distributing heavy lubricants | Expired / Lapsed | 1925-10-22 | 1929-05-21 | 0 | Details |
| US1701724A | Core barrel | Expired / Lapsed | 1924-02-21 | 1929-02-12 | 0 | Details |
| US1630101A | Rustproofing oil | Expired / Lapsed | 1925-03-13 | 1927-05-24 | 0 | Details |
| US1609697A | System and apparatus for discharging lubricants from motor … | Expired / Lapsed | 1924-02-09 | 1926-12-07 | 0 | Details |
| US1609015A | Grease-charging apparatus | Expired / Lapsed | 1925-04-27 | 1926-11-30 | 0 | Details |
| US1506115A | Treating petroleum oils | Expired / Lapsed | 1923-03-21 | 1924-08-26 | 0 | Details |