Patent Explorer
Browse, filter, and analyze 13 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| GB874178A | Apparatus for drilling offshore wells | California Research LLC | Expired / Lapsed | 1958-04-14 | — | 1978-04-14 | 0.0 yrs | 0 | |
| US2956261A | Bubble oscillation eliminator | California Research LLC | Expired / Lapsed | 1956-01-26 | 1960-10-11 | 1976-01-26 | 0.0 yrs | 0 | |
| US2934741A | Calibrated automatic gain control for seismic amplifiers | California Research LLC | Expired / Lapsed | 1956-01-16 | 1960-04-26 | 1976-01-16 | 0.0 yrs | 0 | |
| US2907351A | Means for protecting well casing from corrosion | California Research LLC | Expired / Lapsed | 1955-12-05 | 1959-10-06 | 1975-12-05 | 0.0 yrs | 0 | |
| US2856537A | Circular scanning system for recording nuclear energy spectrum | California Research LLC | Expired / Lapsed | 1954-08-23 | 1958-10-14 | 1974-08-23 | 0.0 yrs | 0 | |
| US2856495A | Resistance type corrosion probe for pipes | California Research LLC | Expired / Lapsed | 1956-05-21 | 1958-10-14 | 1976-05-21 | 0.0 yrs | 0 | |
| US2838743A | Normal moveout correction with common drive for recording medium and recorder and/or reproducing means | California Research LLC | Expired / Lapsed | 1955-04-05 | 1958-06-10 | 1975-04-05 | 0.0 yrs | 0 | |
| US2723232A | Method for inhibiting oil well corrosion | California Research LLC | Expired / Lapsed | 1952-10-29 | 1955-11-08 | 1972-10-29 | 0.0 yrs | 2 | |
| US2694179A | Method for electrical well-logging | California Research LLC | Expired / Lapsed | 1950-03-13 | 1954-11-09 | 1970-03-13 | 0.0 yrs | 0 | |
| US2692231A | Microbiocidal water treatment | California Research LLC | Expired / Lapsed | 1950-09-05 | 1954-10-19 | 1970-09-05 | 0.0 yrs | 2 | |
| US2687378A | Lubricating oil composition | California Research LLC | Expired / Lapsed | 1951-12-11 | 1954-08-24 | 1971-12-11 | 0.0 yrs | 2 | |
| US2599545A | Cyclic adsorption process | California Research LLC | Expired / Lapsed | 1947-12-26 | 1952-06-10 | 1967-12-26 | 0.0 yrs | 0 | |
| US2477383A | Sulfonated detergent and its method of preparation | California Research LLC | Expired / Lapsed | 1946-12-26 | 1949-07-26 | 1966-12-26 | 0.0 yrs | 0 |