Patent Explorer
Browse, filter, and analyze 15 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2791569A | Coating compositions containing a heart-cut paraffin wax and a polyolefin | Union Oil Company of California | Expired / Lapsed | 1953-02-24 | 1957-05-07 | 1973-02-24 | 0.0 yrs | 2 | |
| US2650068A | Coring method and apparatus | Union Oil Company of California | Expired / Lapsed | 1949-01-31 | 1953-08-25 | 1969-01-31 | 0.0 yrs | 0 | |
| US2648056A | Well logging method and apparatus | Union Oil Company of California | Expired / Lapsed | 1948-11-01 | 1953-08-04 | 1968-11-01 | 0.0 yrs | 0 | |
| US2637206A | Flowmeter | Union Oil Company of California | Expired / Lapsed | 1949-10-13 | 1953-05-05 | 1969-10-13 | 0.0 yrs | 0 | |
| US2606003A | Off-shore drilling | Union Oil Company of California | Expired / Lapsed | 1948-08-28 | 1952-08-05 | 1968-08-28 | 0.0 yrs | 0 | |
| US2564861A | Method and apparatus for borehole logging | Union Oil Company of California | Expired / Lapsed | 1949-10-13 | 1951-08-21 | 1969-10-13 | 0.0 yrs | 0 | |
| US2425868A | Method and apparatus for logging drill holes | Union Oil Company of California | Expired / Lapsed | 1936-08-28 | 1947-08-19 | 1956-08-28 | 0.0 yrs | 0 | |
| US2364460A | Coating system for protecting surfaces against marine growth | Union Oil Company of California | Expired / Lapsed | 1940-09-24 | 1944-12-05 | 1960-09-24 | 0.0 yrs | 0 | |
| US2231231A | Process and apparatus for catalytic operations | Union Oil Company of California | Expired / Lapsed | 1937-08-09 | 1941-02-11 | 1957-08-09 | 0.0 yrs | 0 | |
| US2231424A | Catalytic method | Union Oil Company of California | Expired / Lapsed | 1937-08-09 | 1941-02-11 | 1957-08-09 | 0.0 yrs | 0 | |
| US2225668A | Method and apparatus for logging drill holes | Union Oil Company of California | Expired / Lapsed | 1936-08-28 | 1940-12-24 | 1956-08-28 | 0.0 yrs | 0 | |
| US1928969A | Well survey instrument | Union Oil Company of California | Expired / Lapsed | 1930-10-15 | 1933-10-03 | 1950-10-15 | 0.0 yrs | 0 | |
| US1928970A | Well survey instrument | Union Oil Company of California | Expired / Lapsed | 1930-10-15 | 1933-10-03 | 1950-10-15 | 0.0 yrs | 0 | |
| US1910762A | Gas lift apparatus | Union Oil Company of California | Expired / Lapsed | 1932-03-08 | 1933-05-23 | 1952-03-08 | 0.0 yrs | 0 | |
| US1739724A | Recording dynamometer and method of measuring load variations | Union Oil Company of California | Expired / Lapsed | 1927-07-18 | 1929-12-17 | 1947-07-18 | 0.0 yrs | 0 |