Patent GB1124362A successfully refreshed from Google Patents.
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Browse, filter, and analyze 18 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3132094A | Ultrafiltration of electrolyte solutions through ion-exchange memberanes | Gulf Research and Development Co | Expired / Lapsed | 1958-09-11 | 1964-05-05 | 1978-09-11 | 0.0 yrs | 2 | |
| US3009578A | Pre-stressed reinforced ion-exchange membrane and method of making same | Gulf Research and Development Co | Expired / Lapsed | 1958-04-15 | 1961-11-21 | 1978-04-15 | 0.0 yrs | 0 | |
| US2884624A | Pipeline surveying | Gulf Research and Development Co | Expired / Lapsed | 1956-06-28 | 1959-04-28 | 1976-06-28 | 0.0 yrs | 0 | |
| US2785755A | Storm choke for oil wells | Gulf Research and Development Co | Expired / Lapsed | 1954-10-19 | 1957-03-19 | 1974-10-19 | 0.0 yrs | 0 | |
| US2774108A | Method of making low-resistance ion-exchange membranes | Gulf Research and Development Co | Expired / Lapsed | 1952-09-16 | 1956-12-18 | 1972-09-16 | 0.0 yrs | 2 | |
| US2688368A | System for the removal of corrosive fluids from gas wells | Gulf Research and Development Co | Expired / Lapsed | 1950-04-28 | 1954-09-07 | 1970-04-28 | 0.0 yrs | 2 | |
| US2581540A | Method of reducing corrosion in wells | Gulf Research and Development Co | Expired / Lapsed | 1948-09-02 | 1952-01-08 | 1968-09-02 | 0.0 yrs | 2 | |
| US2580182A | Subsurface flowmeter | Gulf Research and Development Co | Expired / Lapsed | 1947-05-01 | 1951-12-25 | 1967-05-01 | 0.0 yrs | 0 | |
| US2555209A | Method and apparatus for measuring the values of magnetic fields | Gulf Research and Development Co | Expired / Lapsed | 1943-11-01 | 1951-05-29 | 1963-11-01 | 0.0 yrs | 0 | |
| US2488449A | Organo-silicon-phosphorus condensation products | Gulf Research and Development Co | Expired / Lapsed | 1946-09-11 | 1949-11-15 | 1966-09-11 | 0.0 yrs | 0 | |
| US2480754A | Chromium-containing phenolic amine reaction product | Gulf Research and Development Co | Expired / Lapsed | 1946-10-17 | 1949-08-30 | 1966-10-17 | 0.0 yrs | 0 | |
| US2463297A | Apparatus for testing insulating materials | Gulf Research and Development Co | Expired / Lapsed | 1944-12-21 | 1949-03-01 | 1964-12-21 | 0.0 yrs | 0 | |
| US2406870A | Apparatus for responding to magnetic fields | Gulf Research and Development Co | Expired / Lapsed | 1941-07-21 | 1946-09-03 | 1961-07-21 | 0.0 yrs | 0 | |
| US2267356A | Apparatus for and method of seismograph recording | Gulf Research and Development Co | Expired / Lapsed | 1940-01-16 | 1941-12-23 | 1960-01-16 | 0.0 yrs | 0 | |
| US2233992A | Method of and apparatus for surveying wells | Gulf Research and Development Co | Expired / Lapsed | 1938-01-03 | 1941-03-04 | 1958-01-03 | 0.0 yrs | 0 | |
| US2233825A | Pump | Gulf Research and Development Co | Expired / Lapsed | 1939-08-04 | 1941-03-04 | 1959-08-04 | 0.0 yrs | 0 | |
| US2183078A | Strain gauge | Gulf Research and Development Co | Expired / Lapsed | 1936-05-25 | 1939-12-12 | 1956-05-25 | 0.0 yrs | 0 | |
| US2055587A | Pump | Gulf Research and Development Co | Expired / Lapsed | 1935-10-11 | 1936-09-29 | 1955-10-11 | 0.0 yrs | 0 |