Standard Oil Development Co
Standard OActive Patents
0
Total Holdings
321
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB718179A | Low temperature ester base hydraulic fluid | Expired / Lapsed | 1951-03-15 | — | 0 | Details |
| GB662650A | Synthetic lubricants | Expired / Lapsed | 1948-11-30 | — | 0 | Details |
| GB584506A | Improved apparatus for spectrographic analysis | Expired / Lapsed | 1944-05-31 | — | 0 | Details |
| GB545832A | Measurement of temperature | Expired / Lapsed | 1940-12-10 | — | 0 | Details |
| GB543625A | Improvements relating to cold-mixed cold-laid pavements | Expired / Lapsed | 1940-10-09 | — | 0 | Details |
| GB513521A | An improved manufacture of hydrocarbon polymers | Expired / Lapsed | 1938-02-12 | — | 0 | Details |
| GB498094A | An improved catalytic method of and apparatus for cracking … | Expired / Lapsed | 1937-11-19 | — | 0 | Details |
| US2701221A | Triply laminated rubber structure | Expired / Lapsed | 1952-04-02 | 1955-02-01 | 2 | Details |
| US2701184A | Apparatus for carrying out catalytic reactions between hydr… | Expired / Lapsed | 1951-05-01 | 1955-02-01 | 1 | Details |
| US2701230A | Hydroforming process and apparatus | Expired / Lapsed | 1949-07-01 | 1955-02-01 | 2 | Details |
| US2698309A | Paper coating wax | Expired / Lapsed | 1952-04-16 | 1954-12-28 | 2 | Details |
| US2697988A | Wire line gas lift valve | Expired / Lapsed | 1952-01-26 | 1954-12-28 | 0 | Details |
| US2697789A | Apparatus and procedure for continuous gas analysis | Expired / Lapsed | 1948-06-05 | 1954-12-21 | 2 | Details |
| US2692239A | Process of preparing a magnesia hydrosol and magnesia hydro… | Expired / Lapsed | 1949-06-18 | 1954-10-19 | 2 | Details |
| US2689787A | Volatile fuel production and apparatus therefor | Expired / Lapsed | 1948-12-18 | 1954-09-21 | 1 | Details |
| US2687987A | Catalytic conversion of hydrocarbons | Expired / Lapsed | 1950-03-23 | 1954-08-31 | 1 | Details |
| US2685685A | Pipe line alarm | Expired / Lapsed | 1952-12-23 | 1954-08-03 | 0 | Details |
| US2684835A | Apparatus for drilling well boreholes | Expired / Lapsed | 1950-07-26 | 1954-07-27 | 0 | Details |
| US2683685A | Elutriation of finely divided solids | Expired / Lapsed | 1951-07-28 | 1954-07-13 | 1 | Details |
| US2678065A | Hydraulic diaphragm | Expired / Lapsed | 1951-05-14 | 1954-05-11 | 0 | Details |
| US2676156A | Preparation of synthesis gas | Expired / Lapsed | 1950-05-19 | 1954-04-20 | 2 | Details |
| US2675355A | Method for inhibiting corrosion | Expired / Lapsed | 1951-07-07 | 1954-04-13 | 2 | Details |
| US2666526A | Process and apparatus for separating mixed materials | Expired / Lapsed | 1951-02-02 | 1954-01-19 | 0 | Details |
| US2664404A | Regeneration of selective hydrogenation catalyst | Expired / Lapsed | 1949-08-18 | 1953-12-29 | 1 | Details |
| US2661768A | Indicating orifice plate for threaded orifice union | Expired / Lapsed | 1949-10-29 | 1953-12-08 | 0 | Details |
| US2661798A | Flare stack, pilot burner, and pilot igniter | Expired / Lapsed | 1948-11-12 | 1953-12-08 | 0 | Details |
| US2656725A | Automatic sampler for liquid hydrocarbon streams | Expired / Lapsed | 1951-05-26 | 1953-10-27 | 0 | Details |
| US2656340A | Aromatic-alkene copolymers of less than 5 per cent aromatic… | Expired / Lapsed | 1950-07-27 | 1953-10-20 | 1 | Details |
| US2654722A | Stabilized solid organic compositions containing acyl-p-ami… | Expired / Lapsed | 1950-09-16 | 1953-10-06 | 2 | Details |
| US2654067A | Cut point determination in pipe-line batching | Expired / Lapsed | 1950-10-18 | 1953-09-29 | 0 | Details |
| US2652384A | Composition of a premilled butadiene-acrylonitrile copolyme… | Expired / Lapsed | 1949-04-12 | 1953-09-15 | 2 | Details |
| US2651369A | Gravel packing apparatus and method for arranging same in w… | Expired / Lapsed | 1952-02-25 | 1953-09-08 | 0 | Details |
| US2651197A | Torque indicating and shock absorber device | Expired / Lapsed | 1950-12-16 | 1953-09-08 | 0 | Details |
| US2649579A | Detector for seismic exploration | Expired / Lapsed | 1950-02-01 | 1953-08-18 | 0 | Details |
| US2648010A | Method of characterizing hydrocarbon mixtures | Expired / Lapsed | 1949-08-10 | 1953-08-04 | 2 | Details |
| US2646065A | Valve | Expired / Lapsed | 1950-12-01 | 1953-07-21 | 0 | Details |
| US2645463A | Method and apparatus for continuous flow mixing | Expired / Lapsed | 1949-02-11 | 1953-07-14 | 0 | Details |
| US2643087A | Self-powered rotary drilling apparatus | Expired / Lapsed | 1950-12-22 | 1953-06-23 | 0 | Details |
| US2642803A | Dual production zone pump | Expired / Lapsed | 1950-04-27 | 1953-06-23 | 0 | Details |
| US2642034A | Tool joint lubricator | Expired / Lapsed | 1950-11-20 | 1953-06-16 | 0 | Details |
| US2642536A | Multicomponent gas analyzer | Expired / Lapsed | 1950-06-01 | 1953-06-16 | 2 | Details |
| US2638847A | Ratio drive for metering or proportioning pumps | Expired / Lapsed | 1947-01-02 | 1953-05-19 | 0 | Details |
| US2636387A | Apparatus for sampling flowing streams | Expired / Lapsed | 1951-07-19 | 1953-04-28 | 0 | Details |
| US2635697A | Apparatus for cementing wells | Expired / Lapsed | 1949-06-29 | 1953-04-21 | 0 | Details |
| US2635949A | Apparatus for contacting solids with fluids | Expired / Lapsed | 1949-03-24 | 1953-04-21 | 2 | Details |
| US2634256A | Modified olefin-diolefin resin | Expired / Lapsed | 1949-02-15 | 1953-04-07 | 2 | Details |
| US2632795A | Retractable electrode for well casing measurements | Expired / Lapsed | 1951-06-01 | 1953-03-24 | 0 | Details |
| US2626870A | Wax and silicone oil auto polish | Expired / Lapsed | 1949-12-05 | 1953-01-27 | 2 | Details |
| US2623805A | Well logging apparatus | Expired / Lapsed | 1946-09-07 | 1952-12-30 | 0 | Details |
| US2623020A | Preparation of zinc aluminate spinels and the addition of g… | Expired / Lapsed | 1949-12-10 | 1952-12-23 | 2 | Details |
| US2622691A | Seismic exploration method | Expired / Lapsed | 1948-05-14 | 1952-12-23 | 0 | Details |
| US2620323A | Age resistor for low-unsaturation polymers | Expired / Lapsed | 1949-03-31 | 1952-12-02 | 1 | Details |
| US2620444A | Process and apparatus for absorption spectrometry | Expired / Lapsed | 1948-12-31 | 1952-12-02 | 0 | Details |
| US2618156A | Gravity and density gradiometer for boreholes | Expired / Lapsed | 1949-12-31 | 1952-11-18 | 0 | Details |
| US2618624A | Composition of styrene and isobutylene polymers | Expired / Lapsed | 1949-02-15 | 1952-11-18 | 0 | Details |
| US2618151A | Cell for measuring relative permeability | Expired / Lapsed | 1948-10-07 | 1952-11-18 | 0 | Details |
| US2616916A | Preparation of olefin lubricant having a high viscosity | Expired / Lapsed | 1950-12-06 | 1952-11-04 | 2 | Details |
| US2616876A | Curing rubbery substances with meta-dinitroso aromatic comp… | Expired / Lapsed | 1949-05-06 | 1952-11-04 | 2 | Details |
| US2614804A | Apparatus for drilling under water | Expired / Lapsed | 1949-01-29 | 1952-10-21 | 0 | Details |
| US2608866A | Fluid sampling equipment | Expired / Lapsed | 1948-06-24 | 1952-09-02 | 0 | Details |
| US2607744A | Corrosion inhibition | Expired / Lapsed | 1949-07-18 | 1952-08-19 | 2 | Details |
| US2607422A | Method and apparatus for suspending pipe in boreholes | Expired / Lapsed | 1948-12-03 | 1952-08-19 | 0 | Details |
| US2604423A | Cellophane laminated with styreneisobutylene copolymer | Expired / Lapsed | 1944-10-06 | 1952-07-22 | 2 | Details |
| US2600415A | Water-soluble surface active agents from olefin polymers | Expired / Lapsed | 1946-12-26 | 1952-06-17 | 2 | Details |
| US2595797A | Process of producing aqueous dispersions of rubberlike plas… | Expired / Lapsed | 1949-06-11 | 1952-05-06 | 2 | Details |
| US2595366A | Processing carbonaceous solids | Expired / Lapsed | 1947-06-14 | 1952-05-06 | 2 | Details |
| US2595092A | Method and apparatus for underwater gravity surveying | Expired / Lapsed | 1947-05-19 | 1952-04-29 | 0 | Details |
| US2592377A | Manufacture of gas mixtures containing carbon monoxide and … | Expired / Lapsed | 1946-08-08 | 1952-04-08 | 2 | Details |
| US2591599A | Structure for drilling wells in deep water | Expired / Lapsed | 1949-08-25 | 1952-04-01 | 0 | Details |
| US2588312A | Foam distributor nozzle | Expired / Lapsed | 1949-08-31 | 1952-03-04 | 0 | Details |
| US2586745A | Acoustic well logging | Expired / Lapsed | 1947-11-26 | 1952-02-19 | 0 | Details |
| US2583231A | Pulsation dampener | Expired / Lapsed | 1946-10-28 | 1952-01-22 | 0 | Details |
| US2582682A | Drilling motion take-off | Expired / Lapsed | 1948-06-26 | 1952-01-15 | 0 | Details |
| US2575195A | Dibasic acid esters and method for producing them | Expired / Lapsed | 1948-10-01 | 1951-11-13 | 2 | Details |
| US2569390A | Well logging | Expired / Lapsed | 1946-08-20 | 1951-09-25 | 0 | Details |
| US2561396A | Segregation of solid particles | Expired / Lapsed | 1946-10-09 | 1951-07-24 | 2 | Details |
| US2559516A | Method and apparatus for combining fluids | Expired / Lapsed | 1949-04-01 | 1951-07-03 | 0 | Details |
| US2559498A | Process for preparing resins from dhsobutylene and cracked … | Expired / Lapsed | 1946-03-09 | 1951-07-03 | 2 | Details |
| US2557714A | Shot pulse recording in reflection seismography | Expired / Lapsed | 1947-09-13 | 1951-06-19 | 0 | Details |
| US2556306A | Device for clamping inner tube stock | Expired / Lapsed | 1949-01-22 | 1951-06-12 | 0 | Details |
| US2556849A | Magnetic junk basket for well bores | Expired / Lapsed | 1948-03-30 | 1951-06-12 | 0 | Details |
| US2556299A | Method of generating directional seismic waves | Expired / Lapsed | 1947-09-12 | 1951-06-12 | 0 | Details |
| US2553427A | Laminated fabric bonded with an improved hydrocarbon interp… | Expired / Lapsed | 1945-05-12 | 1951-05-15 | 2 | Details |
| US2550722A | Method of recovering solids from gases | Expired / Lapsed | 1947-07-10 | 1951-05-01 | 0 | Details |
| US2550438A | Stabilized paraffin wax | Expired / Lapsed | 1947-03-07 | 1951-04-24 | 2 | Details |
| US2549507A | Oil well cementing | Expired / Lapsed | 1947-12-13 | 1951-04-17 | 0 | Details |
| US2548463A | Thermal shock drilling bit | Expired / Lapsed | 1947-12-13 | 1951-04-10 | 0 | Details |
| US2548473A | Automatic weighing machine | Expired / Lapsed | 1946-07-18 | 1951-04-10 | 0 | Details |
| US2545991A | Spray head for fluid receptacles | Expired / Lapsed | 1945-06-06 | 1951-03-20 | 0 | Details |
| US2545162A | Method of detecting incipient afterburning during regenerat… | Expired / Lapsed | 1948-09-24 | 1951-03-13 | 2 | Details |
| US2543843A | Magnetic field measuring device | Expired / Lapsed | 1948-07-08 | 1951-03-06 | 0 | Details |
| US2542610A | Friedel-crafts double salt catalyst | Expired / Lapsed | 1949-02-08 | 1951-02-20 | 2 | Details |
| US2542550A | Esters of polyether acids and process | Expired / Lapsed | 1947-12-31 | 1951-02-20 | 2 | Details |
| US2539263A | Contacting finely divided solids with gases | Expired / Lapsed | 1942-10-28 | 1951-01-23 | 2 | Details |
| US2534718A | Reversible displacement cell | Expired / Lapsed | 1947-06-14 | 1950-12-19 | 0 | Details |
| US2530971A | Acoustic well logging apparatus | Expired / Lapsed | 1947-07-26 | 1950-11-21 | 0 | Details |
| US2529316A | Process for acylating butadienestyrene copolymers | Expired / Lapsed | 1947-04-02 | 1950-11-07 | 2 | Details |
| US2527122A | Determination of olefins in hydrocarbon mixtures | Expired / Lapsed | 1948-11-19 | 1950-10-24 | 0 | Details |
| US2526486A | Handling pulverulent catalyst in hydrocarbon conversion and… | Expired / Lapsed | 1941-07-12 | 1950-10-17 | 2 | Details |
| US2525076A | Pour depressants | Expired / Lapsed | 1948-11-09 | 1950-10-10 | 2 | Details |
| US2523150A | Resinous copolymers of diolefins with refinery c. cuts | Expired / Lapsed | 1946-09-28 | 1950-09-19 | 2 | Details |
| US2522429A | Apparatus for handling oil field emulsions | Expired / Lapsed | 1948-04-30 | 1950-09-12 | 0 | Details |
| US2522433A | Seismic wave transmitter | Expired / Lapsed | 1947-10-24 | 1950-09-12 | 0 | Details |
| US2522430A | Suppression of corrosion | Expired / Lapsed | 1945-07-02 | 1950-09-12 | 0 | Details |
| US2521332A | Oil well formation tester | Expired / Lapsed | 1948-04-23 | 1950-09-05 | 0 | Details |
| US2509885A | Isobutylene purification system | Expired / Lapsed | 1948-03-20 | 1950-05-30 | 2 | Details |
| US2504034A | Production of maleic acid from branched-chain dienes | Expired / Lapsed | 1948-08-13 | 1950-04-11 | 1 | Details |
| US2503003A | Cellular rubber article and process for producing the same | Expired / Lapsed | 1945-06-26 | 1950-04-04 | 2 | Details |
| US2500780A | Stabilization of low unsaturation isoolefinic copolymers | Expired / Lapsed | 1948-12-29 | 1950-03-14 | 2 | Details |
| US2500770A | Method of making water-soluble materials water repellent | Expired / Lapsed | 1947-03-14 | 1950-03-14 | 2 | Details |
| US2500755A | Polymerization of cycle oil from high-temperature steam cra… | Expired / Lapsed | 1945-11-30 | 1950-03-14 | 2 | Details |
| US2500056A | Method and apparatus for solventcleaning finely divided sol… | Expired / Lapsed | 1945-12-20 | 1950-03-07 | 0 | Details |
| US2498710A | Process for burning lime | Expired / Lapsed | 1943-01-01 | 1950-02-28 | 1 | Details |
| US2497954A | Method for removing emulsifying agents from amine solution | Expired / Lapsed | 1947-10-03 | 1950-02-21 | 2 | Details |
| US2497185A | Drill stem testing device | Expired / Lapsed | 1947-12-30 | 1950-02-14 | 0 | Details |
| US2497172A | Means for mounting elongated magnetostrictive elements | Expired / Lapsed | 1947-09-27 | 1950-02-14 | 0 | Details |
| CA462907A | Method for inhibiting the corrosion of distillation equipme… | Expired / Lapsed | — | 1950-01-31 | 0 | Details |
| US2489450A | Valve assembly for plural motor operation | Expired / Lapsed | 1946-08-30 | 1949-11-29 | 0 | Details |
| US2476005A | Analytical apparatus | Expired / Lapsed | 1945-08-06 | 1949-07-12 | 0 | Details |
| US2475990A | Separation of hydrocarbons | Expired / Lapsed | 1945-08-04 | 1949-07-12 | 0 | Details |
| US2475258A | Feedback automatic volume control circuit for seismic ampli… | Expired / Lapsed | 1946-04-04 | 1949-07-05 | 0 | Details |
| US2472844A | Maintenance of catalyst activity in hydrocarbon conversion … | Expired / Lapsed | 1942-06-25 | 1949-06-14 | 0 | Details |
| US2472495A | Condensation product of a polyhalogenated aliphatic hydroca… | Expired / Lapsed | 1945-05-03 | 1949-06-07 | 0 | Details |
| US2471905A | Adhesion of butyl rubber to metal | Expired / Lapsed | 1944-02-01 | 1949-05-31 | 0 | Details |
| US2467177A | Heat exchange media | Expired / Lapsed | 1944-12-30 | 1949-04-12 | 0 | Details |
| US2464487A | Conduit for corrosive fluids | Expired / Lapsed | 1944-07-26 | 1949-03-15 | 0 | Details |
| US2462616A | Lubricating oil containing an antioxidant | Expired / Lapsed | 1944-12-05 | 1949-02-22 | 0 | Details |
| US2461966A | Oxidized polyisobutylene | Expired / Lapsed | 1944-09-16 | 1949-02-15 | 0 | Details |
| US2459404A | Method and apparatus for controlling multicomponent separat… | Expired / Lapsed | 1946-03-15 | 1949-01-18 | 0 | Details |
| US2454941A | Drying hydrogel catalysts by distilling with butanol | Expired / Lapsed | 1944-02-25 | 1948-11-30 | 0 | Details |
| US2454466A | Regeneration of fluid catalysts with cooling of flue gases … | Expired / Lapsed | 1944-02-03 | 1948-11-23 | 0 | Details |
| US2453844A | Snap acting mechanism adapted for operating valves of steam… | Expired / Lapsed | 1946-04-12 | 1948-11-16 | 0 | Details |
| US2453880A | Container | Expired / Lapsed | 1943-12-28 | 1948-11-16 | 0 | Details |
| US2451332A | Stripping of polymer latices | Expired / Lapsed | 1942-12-05 | 1948-10-12 | 0 | Details |
| US2444990A | Contacting solid particles and gaseous fluids | Expired / Lapsed | 1941-09-12 | 1948-07-13 | 0 | Details |
| US2444174A | Galvanic coating process | Expired / Lapsed | 1943-08-24 | 1948-06-29 | 0 | Details |
| US2442476A | Prospecting for petroleum deposits | Expired / Lapsed | 1946-09-10 | 1948-06-01 | 0 | Details |
| US2438446A | Lubricant and hydraulic fluid composition | Expired / Lapsed | 1945-05-25 | 1948-03-23 | 0 | Details |
| US2437323A | Apparatus for instantaneously indicating on an oscilloscope… | Expired / Lapsed | 1944-05-26 | 1948-03-09 | 0 | Details |
| US2436733A | Zinc oxide-bismuth oxide catalyst | Expired / Lapsed | 1944-12-28 | 1948-02-24 | 0 | Details |
| US2436614A | Solid styrene polymer formation at low temperatures | Expired / Lapsed | 1942-07-10 | 1948-02-24 | 0 | Details |
| US2436563A | Well logging | Expired / Lapsed | 1941-12-27 | 1948-02-24 | 0 | Details |
| US2434490A | Rust preventive lubricating oil compositions | Expired / Lapsed | 1944-12-30 | 1948-01-13 | 0 | Details |
| US2434531A | High-speed recording system | Expired / Lapsed | 1944-04-21 | 1948-01-13 | 0 | Details |
| US2434567A | Method and apparatus for contacting hydrocarbons with catal… | Expired / Lapsed | 1944-01-19 | 1948-01-13 | 0 | Details |
| US2433030A | Separation of olefins from a hydrocarbon stream | Expired / Lapsed | 1946-01-07 | 1947-12-23 | 0 | Details |
| US2431005A | Recovery and regeneration of isobutenes | Expired / Lapsed | 1944-08-19 | 1947-11-18 | 0 | Details |
| US2429751A | Separation of gases from solid particles | Expired / Lapsed | 1944-09-23 | 1947-10-28 | 0 | Details |
| US2423754A | Analyzer for subterranean fluid reservoirs | Expired / Lapsed | 1943-09-28 | 1947-07-08 | 0 | Details |
| US2423774A | Oil determination | Expired / Lapsed | 1942-04-02 | 1947-07-08 | 0 | Details |
| US2422499A | Alumina gel | Expired / Lapsed | 1944-02-16 | 1947-06-17 | 0 | Details |
| US2421434A | Cementing wells | Expired / Lapsed | 1944-11-27 | 1947-06-03 | 0 | Details |
| US2421664A | Contacting fluids with solid particles | Expired / Lapsed | 1940-12-28 | 1947-06-03 | 0 | Details |
| US2420049A | Catalytic hydrocarbon conversion starting up procedure | Expired / Lapsed | 1943-12-31 | 1947-05-06 | 0 | Details |
| US2417877A | Automatic oxygen indicator | Expired / Lapsed | 1944-01-04 | 1947-03-25 | 0 | Details |
| US2415364A | Logging bore holes | Expired / Lapsed | 1941-12-29 | 1947-02-04 | 0 | Details |
| US2414852A | Catalytic process and apparatus | Expired / Lapsed | 1944-04-11 | 1947-01-28 | 0 | Details |
| US2414883A | Catalytic reactions | Expired / Lapsed | 1942-10-14 | 1947-01-28 | 0 | Details |
| US2413311A | Lubricant and process for preparing same | Expired / Lapsed | 1943-10-08 | 1946-12-31 | 0 | Details |
| US2412575A | Well logging | Expired / Lapsed | 1941-07-26 | 1946-12-17 | 0 | Details |
| US2409707A | Cement manufacture | Expired / Lapsed | 1943-01-29 | 1946-10-22 | 0 | Details |
| US2408012A | Well logging | Expired / Lapsed | 1942-08-10 | 1946-09-24 | 0 | Details |
| US2405935A | Treatment of cracked naphtha | Expired / Lapsed | 1943-12-16 | 1946-08-20 | 0 | Details |
| US2404064A | Apparatus for investigating absorption spectra of substances | Expired / Lapsed | 1943-12-31 | 1946-07-16 | 0 | Details |
| US2404031A | Corrosion preventing electrode | Expired / Lapsed | 1943-06-18 | 1946-07-16 | 0 | Details |
| US2403964A | Surface coating for packaging polymers | Expired / Lapsed | 1942-12-09 | 1946-07-16 | 0 | Details |
| US2403735A | Hydrogen chloride manufacture | Expired / Lapsed | 1942-11-26 | 1946-07-09 | 0 | Details |
| US2403704A | Thermal prospecting | Expired / Lapsed | 1942-03-27 | 1946-07-09 | 0 | Details |
| US2400340A | Process for separating olefins from a hydrocarbon stream | Expired / Lapsed | 1944-12-01 | 1946-05-14 | 0 | Details |
| US2400020A | Catalytic cracking of hydrocarbon oils | Expired / Lapsed | 1943-10-22 | 1946-05-07 | 0 | Details |
| US2399050A | Treating hydrocarbon fluids | Expired / Lapsed | 1941-12-30 | 1946-04-23 | 0 | Details |
| US2398238A | Integrating apparatus | Expired / Lapsed | 1942-05-09 | 1946-04-09 | 0 | Details |
| US2397505A | Catalytic cracking and catalyst reactivation | Expired / Lapsed | 1943-08-28 | 1946-04-02 | 0 | Details |
| US2397485A | Chemical process | Expired / Lapsed | 1941-07-05 | 1946-04-02 | 0 | Details |
| US2397199A | Apparatus for cleaning wells | Expired / Lapsed | 1942-10-05 | 1946-03-26 | 0 | Details |
| US2397352A | Chemical process | Expired / Lapsed | 1941-10-11 | 1946-03-26 | 0 | Details |
| US2394616A | Surface coating for packaging polymers | Expired / Lapsed | 1942-12-09 | 1946-02-12 | 0 | Details |
| US2393704A | Process of producing magnesium | Expired / Lapsed | 1943-06-26 | 1946-01-29 | 0 | Details |
| US2391110A | Mixing device | Expired / Lapsed | 1944-07-03 | 1945-12-18 | 0 | Details |
| US2391160A | Refining operation | Expired / Lapsed | 1942-05-02 | 1945-12-18 | 0 | Details |
| US2390328A | Directional seismograph pickup | Expired / Lapsed | 1943-06-25 | 1945-12-04 | 0 | Details |
| US2388105A | Spectrograph | Expired / Lapsed | 1943-12-09 | 1945-10-30 | 0 | Details |
| US2387513A | Well logging | Expired / Lapsed | 1941-08-08 | 1945-10-23 | 0 | Details |
| US2383643A | Catalytic dehydrogenation | Expired / Lapsed | 1942-03-26 | 1945-08-28 | 0 | Details |
| US2383636A | Temperature control of catalytic reactions | Expired / Lapsed | 1941-08-09 | 1945-08-28 | 0 | Details |
| US2382382A | Process for the reactivation of catalyst | Expired / Lapsed | 1942-01-08 | 1945-08-14 | 0 | Details |
| US2379734A | Treatment of gases | Expired / Lapsed | 1943-02-20 | 1945-07-03 | 0 | Details |
| US2379711A | Catalytic conversion of hydrocarbon oils | Expired / Lapsed | 1941-09-12 | 1945-07-03 | 0 | Details |
| US2379268A | Process for preventing foaming during removal of olefin mon… | Expired / Lapsed | 1942-05-02 | 1945-06-26 | 0 | Details |
| US2379240A | Method of controlling fluid flow | Expired / Lapsed | 1942-04-15 | 1945-06-26 | 0 | Details |
| US2376168A | Well logging | Expired / Lapsed | 1938-10-19 | 1945-05-15 | 0 | Details |
| US2372582A | Means of transmitting information | Expired / Lapsed | 1940-11-02 | 1945-03-27 | 0 | Details |
| US2370797A | Method for the catalytic dehydrogenation of hydrocarbons | Expired / Lapsed | 1942-08-26 | 1945-03-06 | 0 | Details |
| US2366514A | Modified plastic | Expired / Lapsed | 1942-01-20 | 1945-01-02 | 0 | Details |
| US2366043A | Automatic gain adjusting device for reflection seismographs | Expired / Lapsed | 1936-06-26 | 1944-12-26 | 0 | Details |
| US2362332A | Corrosion preventive compositions | Expired / Lapsed | 1940-06-29 | 1944-11-07 | 0 | Details |
| US2361458A | Microphone for conduits | Expired / Lapsed | 1942-08-10 | 1944-10-31 | 0 | Details |
| US2356717A | Recovery of finely divided solid materials | Expired / Lapsed | 1942-12-15 | 1944-08-22 | 0 | Details |
| US2355255A | Nonfoaming oil-containing composition | Expired / Lapsed | 1941-12-02 | 1944-08-08 | 0 | Details |
| US2354548A | Seismic prospecting | Expired / Lapsed | 1941-08-29 | 1944-07-25 | 0 | Details |
| US2352247A | Thermal well-logging | Expired / Lapsed | 1938-06-04 | 1944-06-27 | 0 | Details |
| US2351456A | Seismic prospecting | Expired / Lapsed | 1941-08-29 | 1944-06-13 | 0 | Details |
| US2351457A | Grating spectrograph | Expired / Lapsed | 1940-11-25 | 1944-06-13 | 0 | Details |
| US2347527A | Cracking of hydrocarbons | Expired / Lapsed | 1940-12-27 | 1944-04-25 | 0 | Details |
| US2344900A | Treating hydrocarbon fluids | Expired / Lapsed | 1942-04-02 | 1944-03-21 | 0 | Details |
| US2344449A | Treating hydrocarbon fluids | Expired / Lapsed | 1941-04-05 | 1944-03-14 | 0 | Details |
| US2343780A | Reaction between solids and gases | Expired / Lapsed | 1941-08-01 | 1944-03-07 | 0 | Details |
| US2342884A | Hydraulic packer | Expired / Lapsed | 1941-07-22 | 1944-02-29 | 0 | Details |
| US2339932A | Chemical process | Expired / Lapsed | 1941-04-10 | 1944-01-25 | 0 | Details |
| US2337472A | Underground storage vessel | Expired / Lapsed | 1941-03-21 | 1943-12-21 | 0 | Details |
| US2336620A | Lubricating oil | Expired / Lapsed | 1939-10-04 | 1943-12-14 | 0 | Details |
| US2335017A | Lubricating composition | Expired / Lapsed | 1941-12-31 | 1943-11-23 | 0 | Details |
| US2332807A | Fluid density indicator | Expired / Lapsed | 1941-05-02 | 1943-10-26 | 0 | Details |
| US2332267A | Cutting collector | Expired / Lapsed | 1942-05-18 | 1943-10-19 | 0 | Details |
| US2332201A | Method for recovering liquids from gases | Expired / Lapsed | 1941-03-31 | 1943-10-19 | 0 | Details |
| US2332276A | Catalytic hydrocarbon condensation process | Expired / Lapsed | 1940-11-22 | 1943-10-19 | 0 | Details |
| US2332194A | Rubberlike composition and process for making the same | Expired / Lapsed | 1939-04-29 | 1943-10-19 | 0 | Details |
| US2330721A | Method of determining connate water content of cores | Expired / Lapsed | 1942-05-18 | 1943-09-28 | 0 | Details |
| US2330685A | Catalyst | Expired / Lapsed | 1940-11-30 | 1943-09-28 | 0 | Details |
| US2327697A | Gravity meter | Expired / Lapsed | 1941-02-07 | 1943-08-24 | 0 | Details |
| US2327539A | Apparatus for gas analysis | Expired / Lapsed | 1940-12-03 | 1943-08-24 | 0 | Details |
| US2326577A | Removal of mud cake in casing cement jobs | Expired / Lapsed | 1943-01-01 | 1943-08-10 | 0 | Details |
| US2326523A | Preparation of gel catalyst | Expired / Lapsed | 1939-06-24 | 1943-08-10 | 0 | Details |
| US2324899A | Method and apparatus for taking a series of spectrograph me… | Expired / Lapsed | 1941-07-11 | 1943-07-20 | 0 | Details |
| US2322634A | Method and apparatus for logging boreholes | Expired / Lapsed | 1941-06-23 | 1943-06-22 | 0 | Details |
| US2322482A | Production of motor fuels by alkylation | Expired / Lapsed | 1938-12-30 | 1943-06-22 | 0 | Details |
| US2322018A | Sampling and metering device | Expired / Lapsed | 1941-01-16 | 1943-06-15 | 0 | Details |
| US2322075A | Regeneration of powder | Expired / Lapsed | 1940-11-30 | 1943-06-15 | 0 | Details |
| US2322019A | Art of treating hydrocarbons | Expired / Lapsed | 1940-02-10 | 1943-06-15 | 0 | Details |
| US2320218A | Viscosimeter | Expired / Lapsed | 1941-03-24 | 1943-05-25 | 0 | Details |
| US2319730A | Pump | Expired / Lapsed | 1941-09-26 | 1943-05-18 | 0 | Details |
| US2319710A | Catalytic cracking process | Expired / Lapsed | 1938-12-29 | 1943-05-18 | 0 | Details |
| US2318684A | Impregnating and plastizing composition | Expired / Lapsed | 1939-07-01 | 1943-05-11 | 0 | Details |
| US2315127A | Resistance thermometer | Expired / Lapsed | 1939-10-12 | 1943-03-30 | 0 | Details |
| US2313117A | Chemical product and process of producing same | Expired / Lapsed | 1939-08-12 | 1943-03-09 | 0 | Details |
| US2310305A | Method and means for purifying lubricants | Expired / Lapsed | 1937-12-31 | 1943-02-09 | 0 | Details |
| US2307887A | Rotating contact device | Expired / Lapsed | 1939-12-28 | 1943-01-12 | 0 | Details |
| US2305023A | Sampling device | Expired / Lapsed | 1941-02-07 | 1942-12-15 | 0 | Details |
| US2305082A | Geochemical prospecting | Expired / Lapsed | 1940-06-28 | 1942-12-15 | 0 | Details |
| US2298794A | Well logging | Expired / Lapsed | 1941-06-23 | 1942-10-13 | 0 | Details |
| US2296342A | Stable breaking-in oil | Expired / Lapsed | 1940-11-30 | 1942-09-22 | 0 | Details |
| US2296406A | Method of preparing catalyst | Expired / Lapsed | 1940-07-25 | 1942-09-22 | 0 | Details |
| US2296722A | Cracking of hydrocarbon oils | Expired / Lapsed | 1939-08-26 | 1942-09-22 | 0 | Details |
| US2296330A | Gravity ballance | Expired / Lapsed | 1938-02-03 | 1942-09-22 | 0 | Details |
| US2288278A | Gamma-ray well logging | Expired / Lapsed | 1941-06-23 | 1942-06-30 | 0 | Details |
| US2284554A | Condensation catalysts of increased activity and process of… | Expired / Lapsed | 1940-08-03 | 1942-05-26 | 0 | Details |
| US2281911A | Separation of isobutylene from hydrocarbon mixtures | Expired / Lapsed | 1938-11-19 | 1942-05-05 | 0 | Details |
| US2280860A | Coating composition and method of making same | Expired / Lapsed | 1933-12-30 | 1942-04-28 | 0 | Details |
| US2278982A | Printing roll | Expired / Lapsed | 1938-12-30 | 1942-04-07 | 0 | Details |
| US2275164A | Cellular thermoplastic mass | Expired / Lapsed | 1938-12-31 | 1942-03-03 | 0 | Details |
| US2274749A | Hydrocarbon copolymer and method of preparing same | Expired / Lapsed | 1937-07-17 | 1942-03-03 | 0 | Details |
| US2270285A | Impregnated fabric | Expired / Lapsed | 1938-12-31 | 1942-01-20 | 0 | Details |
| US2269889A | Process for locating valuable subterranean deposits | Expired / Lapsed | 1939-02-27 | 1942-01-13 | 0 | Details |
| US2268608A | Lubricants | Expired / Lapsed | 1939-12-05 | 1942-01-06 | 0 | Details |
| US2268130A | Method of geophysical investigation | Expired / Lapsed | 1940-02-08 | 1941-12-30 | 0 | Details |
| US2268094A | Catalytic process for treating hydrocarbon oils | Expired / Lapsed | 1939-02-09 | 1941-12-30 | 0 | Details |
| US2268110A | Cracking oils using synthetic catalytic compositions | Expired / Lapsed | 1938-12-06 | 1941-12-30 | 0 | Details |
| US2268109A | Cracking using synthetic catalytic compositions | Expired / Lapsed | 1938-12-06 | 1941-12-30 | 0 | Details |
| US2266161A | Process for reacting hydrogen and oxides of carbon | Expired / Lapsed | 1940-12-17 | 1941-12-16 | 0 | Details |
| US2261321A | Seismic exploration method | Expired / Lapsed | 1938-06-17 | 1941-11-04 | 0 | Details |
| US2260409A | Preparation of maleic acid | Expired / Lapsed | 1938-10-04 | 1941-10-28 | 0 | Details |
| US2257170A | Method for locating hydrocarbon deposits in the earth | Expired / Lapsed | 1938-01-21 | 1941-09-30 | 0 | Details |
| US2257177A | Polymerization by means of a high frequency electric discha… | Expired / Lapsed | 1937-07-17 | 1941-09-30 | 0 | Details |
| US2245679A | Sampling device for pipe lines | Expired / Lapsed | 1938-02-18 | 1941-06-17 | 0 | Details |
| US2245700A | Resistance thermometer | Expired / Lapsed | 1937-10-08 | 1941-06-17 | 0 | Details |
| US2243470A | Production of high molecular weight polymers from iso-olefi… | Expired / Lapsed | 1939-04-21 | 1941-05-27 | 0 | Details |
| US2241531A | Instrument oil | Expired / Lapsed | 1936-07-15 | 1941-05-13 | 0 | Details |
| US2238609A | Pressure core barrel | Expired / Lapsed | 1939-04-21 | 1941-04-15 | 0 | Details |
| US2235955A | Addition agent for enhancement of the properties of drillin… | Expired / Lapsed | 1937-09-21 | 1941-03-25 | 0 | Details |
| US2234637A | Oil prospecting method | Expired / Lapsed | 1939-07-22 | 1941-03-11 | 0 | Details |
| US2230556A | Foam suppressor for soluble oils | Expired / Lapsed | 1938-01-11 | 1941-02-04 | 0 | Details |
| US2230542A | Process for preparing improved oxidation inhibitors and pro… | Expired / Lapsed | 1937-11-27 | 1941-02-04 | 0 | Details |
| US2227149A | Lubricating oil for diesel engines | Expired / Lapsed | 1937-12-23 | 1940-12-31 | 0 | Details |
| US2226589A | Metal coating and adhesive therefor | Expired / Lapsed | 1933-05-12 | 1940-12-31 | 0 | Details |
| US2221951A | Making electrical measurements | Expired / Lapsed | 1937-12-24 | 1940-11-19 | 0 | Details |
| US2222182A | Earth impedance measuring device | Expired / Lapsed | 1937-08-21 | 1940-11-19 | 0 | Details |
| FR857643A | Process for preparing maleic acid | Expired / Lapsed | 1939-07-10 | 1940-09-21 | 0 | Details |
| US2215305A | Process for reactivating synthetic oxide gel catalysts | Expired / Lapsed | 1938-12-10 | 1940-09-17 | 0 | Details |
| US2213423A | Hydrocarbon copolymer composition | Expired / Lapsed | 1937-04-09 | 1940-09-03 | 0 | Details |
| US2202363A | Plasticized synthetic rubber compositions | Expired / Lapsed | 1936-12-18 | 1940-05-28 | 0 | Details |
| US2200476A | Measurement of acoustical properties of materials | Expired / Lapsed | 1935-12-31 | 1940-05-14 | 0 | Details |
| US2190476A | Resilient seal for floating roofs | Expired / Lapsed | 1937-01-21 | 1940-02-13 | 0 | Details |
| US2184966A | Plasticized synthetic rubber composition | Expired / Lapsed | 1936-12-18 | 1939-12-26 | 0 | Details |
| US2181144A | High molecular weight halogenated organic compounds and met… | Expired / Lapsed | 1937-10-20 | 1939-11-28 | 0 | Details |
| US2180374A | Production of liquid saturated hydrocarbons | Expired / Lapsed | 1938-11-19 | 1939-11-21 | 0 | Details |
| US2174248A | Stabilized lubricating composition | Expired / Lapsed | 1936-08-01 | 1939-09-26 | 0 | Details |
| US2170435A | Gas analysis apparatus | Expired / Lapsed | 1937-12-14 | 1939-08-22 | 0 | Details |
| US2167358A | Method of recovering condensing agents | Expired / Lapsed | 1936-11-21 | 1939-07-25 | 0 | Details |
| US2165820A | Manufacture of acetylene | Expired / Lapsed | 1934-12-29 | 1939-07-11 | 0 | Details |
| US2160996A | Plasticized synthetic rubber composition | Expired / Lapsed | 1936-12-18 | 1939-06-06 | 0 | Details |
| US2148422A | Method of determining the dips of geological strata with su… | Expired / Lapsed | 1936-06-26 | 1939-02-28 | 0 | Details |
| US2148679A | Use of high frequencies in measuring change in electrical i… | Expired / Lapsed | 1934-12-28 | 1939-02-28 | 0 | Details |
| US2148678A | Apparatus for comparing a plurality of oscillatory systems | Expired / Lapsed | 1934-11-08 | 1939-02-28 | 0 | Details |
| US2138895A | Rubber compositions and methods of preparing same | Expired / Lapsed | 1937-05-05 | 1938-12-06 | 0 | Details |
| US2133484A | Use of a distributed charge in seismic prospecting | Expired / Lapsed | 1936-08-19 | 1938-10-18 | 0 | Details |
| US2132807A | Single cable electrical well-logging | Expired / Lapsed | 1936-06-25 | 1938-10-11 | 0 | Details |
| US2131191A | Dispersion of olefines in acid polymerization | Expired / Lapsed | 1936-10-24 | 1938-09-27 | 0 | Details |
| US2115896A | Rubber substitutes | Expired / Lapsed | 1933-12-30 | 1938-05-03 | 0 | Details |
| US2113749A | Method and apparatus for comparing electrical transients | Expired / Lapsed | 1935-12-13 | 1938-04-12 | 0 | Details |
| US2104440A | Method of geophysical prospecting by the comparison of stea… | Expired / Lapsed | 1936-06-06 | 1938-01-04 | 0 | Details |
| US2104408A | Lubricant | Expired / Lapsed | 1933-09-20 | 1938-01-04 | 0 | Details |
| US2096867A | Low frequency oscillator with negligible resistance | Expired / Lapsed | 1934-09-26 | 1937-10-26 | 0 | Details |
| US2074043A | Seismograph | Expired / Lapsed | 1932-07-29 | 1937-03-16 | 0 | Details |
| US2069917A | Liquid level indicator | Expired / Lapsed | 1934-12-29 | 1937-02-09 | 0 | Details |
| US2062374A | Method for cooling and granulating asphalt | Expired / Lapsed | 1934-08-18 | 1936-12-01 | 0 | Details |
| US2058899A | Viscous liquid for use in shock absorbers | Expired / Lapsed | 1932-12-01 | 1936-10-27 | 0 | Details |
| US2055476A | Seismic prospecting | Expired / Lapsed | 1932-02-26 | 1936-09-29 | 0 | Details |
| US2054067A | Method and apparatus for seismicelectric prospecting | Expired / Lapsed | 1934-12-27 | 1936-09-15 | 0 | Details |
| US2046104A | Method and apparatus for seismic prospecting | Expired / Lapsed | 1932-12-14 | 1936-06-30 | 0 | Details |
| US2038617A | Method for refining fatty acids | Expired / Lapsed | 1933-12-01 | 1936-04-28 | 0 | Details |
| US2025715A | Method for clarifying liquids and producing useful products | Expired / Lapsed | 1931-12-21 | 1935-12-31 | 0 | Details |
| US2025780A | Wheel scrubbing apparatus | Expired / Lapsed | 1931-12-12 | 1935-12-31 | 0 | Details |
| US2009711A | Gravity flow control | Expired / Lapsed | 1933-12-15 | 1935-07-30 | 0 | Details |
| US2002532A | Thermocouple | Expired / Lapsed | 1931-09-24 | 1935-05-28 | 0 | Details |
| US1981819A | Initiating polymerization reactions | Expired / Lapsed | 1931-05-08 | 1934-11-20 | 0 | Details |
| US1943850A | Magnetometer | Expired / Lapsed | 1929-01-22 | 1934-01-16 | 0 | Details |
| US1914999A | Filtering used motor oils | Expired / Lapsed | 1932-03-10 | 1933-06-20 | 0 | Details |
| US1888976A | Apparatus for measuring relative values of gravity | Expired / Lapsed | 1930-09-05 | 1932-11-29 | 0 | Details |
| US1876994A | Distributor for reactive liquids and method of using the sa… | Expired / Lapsed | 1930-05-05 | 1932-09-13 | 0 | Details |
| US1852445A | Sampling device | Expired / Lapsed | 1927-03-04 | 1932-04-05 | 0 | Details |
| US1789339A | Method and apparatus for distillation control | Expired / Lapsed | 1928-03-31 | 1931-01-20 | 0 | Details |