Well Surveys Inc
Well SurveActive Patents
0
Total Holdings
42
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3127512A | Neutron-gamma geophysical prospecting method and apparatus | Expired / Lapsed | 1958-06-30 | 1964-03-31 | 1 | Details |
| US3019414A | Method of and apparatus for producing and transmitting bore… | Expired / Lapsed | 1957-11-12 | 1962-01-30 | 0 | Details |
| US2991367A | Neutron source | Expired / Lapsed | 1955-06-24 | 1961-07-04 | 0 | Details |
| US2942112A | Multiple well logging system | Expired / Lapsed | 1956-12-28 | 1960-06-21 | 0 | Details |
| US2920204A | Apparatus for simultaneous detection of thermal and epither… | Expired / Lapsed | 1956-09-04 | 1960-01-05 | 0 | Details |
| US2776378A | Method and apparatus for radioactivity well-logging | Expired / Lapsed | 1951-01-26 | 1957-01-01 | 0 | Details |
| US2775503A | Multiple trace recorder | Expired / Lapsed | 1953-07-10 | 1956-12-25 | 0 | Details |
| US2711084A | Refrigeration system for well logging instruments | Expired / Lapsed | 1952-08-30 | 1955-06-21 | 0 | Details |
| US2689918A | Static atmosphere ion accelerator for well logging | Expired / Lapsed | 1952-04-26 | 1954-09-21 | 2 | Details |
| US2659011A | Method and apparatus for compensation for the effects of te… | Expired / Lapsed | 1951-05-23 | 1953-11-10 | 0 | Details |
| AT174407B | Device for carrying out remote-controlled manipulations | Expired / Lapsed | 1951-10-15 | 1953-03-25 | 0 | Details |
| US2602833A | Casing collar locator | Expired / Lapsed | 1948-07-15 | 1952-07-08 | 0 | Details |
| US2554844A | Casing collar locator | Expired / Lapsed | 1946-03-22 | 1951-05-29 | 0 | Details |
| US2543676A | Method and apparatus for neutron well logging | Expired / Lapsed | 1949-07-28 | 1951-02-27 | 0 | Details |
| US2515500A | Method and apparatus for producing neutron logs of drill ho… | Expired / Lapsed | 1948-06-23 | 1950-07-18 | 0 | Details |
| US2507351A | Transmitting of information in drill holes | Expired / Lapsed | 1945-11-23 | 1950-05-09 | 0 | Details |
| US2470224A | Ionization chamber | Expired / Lapsed | 1944-12-06 | 1949-05-17 | 0 | Details |
| US2414862A | Well surveying apparatus | Expired / Lapsed | 1940-08-15 | 1947-01-28 | 0 | Details |
| US2400593A | Method of and apparatus for investigation of cased drill ho… | Expired / Lapsed | 1937-05-07 | 1946-05-21 | 0 | Details |
| US2398324A | Well surveying | Expired / Lapsed | 1943-08-10 | 1946-04-09 | 0 | Details |
| US2390433A | Well survey method and apparatus | Expired / Lapsed | 1944-07-29 | 1945-12-04 | 0 | Details |
| US2368532A | Well survey method and apparatus | Expired / Lapsed | 1939-12-27 | 1945-01-30 | 0 | Details |
| US2361389A | Well survey method and apparatus | Expired / Lapsed | 1939-10-16 | 1944-10-31 | 0 | Details |
| US2351028A | Well surveying method and apparatus | Expired / Lapsed | 1941-09-17 | 1944-06-13 | 0 | Details |
| US2349228A | Weighing device | Expired / Lapsed | 1942-02-25 | 1944-05-16 | 0 | Details |
| US2349225A | Well logging instrument | Expired / Lapsed | 1941-09-15 | 1944-05-16 | 0 | Details |
| US2323484A | Well-logging method and apparatus | Expired / Lapsed | 1941-05-12 | 1943-07-06 | 0 | Details |
| US2322478A | Well surveying method and apparatus | Expired / Lapsed | 1940-05-28 | 1943-06-22 | 0 | Details |
| US2316576A | Well surveying method and apparatus | Expired / Lapsed | 1940-08-14 | 1943-04-13 | 0 | Details |
| US2315355A | Well surveying method and apparatus | Expired / Lapsed | 1940-04-30 | 1943-03-30 | 0 | Details |
| US2308361A | Well logging method and device | Expired / Lapsed | 1938-11-10 | 1943-01-12 | 0 | Details |
| US2303688A | Well surveying method and apparatus | Expired / Lapsed | 1940-05-14 | 1942-12-01 | 0 | Details |
| US2302247A | Well surveying method and apparatus | Expired / Lapsed | 1940-04-22 | 1942-11-17 | 0 | Details |
| US2296176A | Well survey method and apparatus | Expired / Lapsed | 1940-03-09 | 1942-09-15 | 0 | Details |
| US2289926A | Well survey method and apparatus | Expired / Lapsed | 1940-03-18 | 1942-07-14 | 0 | Details |
| US2285809A | Well surveying method and apparatus | Expired / Lapsed | 1940-04-04 | 1942-06-09 | 0 | Details |
| US2285840A | Well survey method and apparatus | Expired / Lapsed | 1939-08-04 | 1942-06-09 | 0 | Details |
| US2275748A | Well survey method and apparatus | Expired / Lapsed | 1940-03-28 | 1942-03-10 | 0 | Details |
| US2275747A | Well survey method and apparatus | Expired / Lapsed | 1939-12-27 | 1942-03-10 | 0 | Details |
| US2273215A | Well surveying method and apparatus | Expired / Lapsed | 1940-04-22 | 1942-02-17 | 0 | Details |
| US2219274A | Well survey method and apparatus | Expired / Lapsed | 1939-10-16 | 1940-10-22 | 0 | Details |
| US2219273A | Well logging by measurements of radioactivity | Expired / Lapsed | 1939-06-16 | 1940-10-22 | 0 | Details |