Hughes Tool Co
Hughes TooActive Patents
0
Total Holdings
40
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3889747A | Telescopic riser tensioning apparatus | Expired / Lapsed | 1973-07-23 | 1975-06-17 | 10 | Details |
| US3603409A | Method and apparatus for balancing subsea internal and exte… | Expired / Lapsed | 1969-03-27 | 1971-09-07 | 12 | Details |
| US3554221A | Method and apparatus for stabilizing fluid flow | Expired / Lapsed | 1969-01-27 | 1971-01-12 | 8 | Details |
| US3476438A | Cutter bit | Expired / Lapsed | 1967-12-18 | 1969-11-04 | 0 | Details |
| US3321248A | Tunneling machine guidance by impingement of laser beam on … | Expired / Lapsed | 1965-03-09 | 1967-05-23 | 4 | Details |
| US3199878A | Seal between a pair of relatively rotatably, radially exten… | Expired / Lapsed | 1962-12-10 | 1965-08-10 | 2 | Details |
| US2913005A | Pilot-actuated control valve | Expired / Lapsed | 1956-07-23 | 1959-11-17 | 0 | Details |
| US2855182A | Replaceable nozzle for drill bits | Expired / Lapsed | 1954-04-05 | 1958-10-07 | 0 | Details |
| US2772899A | Threaded oil well drill stem connection with the threads ha… | Expired / Lapsed | 1948-05-15 | 1956-12-04 | 0 | Details |
| US2727759A | Valved couplers for fluid-conducting conduits | Expired / Lapsed | 1951-10-27 | 1955-12-20 | 0 | Details |
| US2727761A | Couplers for fluid-conducting conduits | Expired / Lapsed | 1951-10-27 | 1955-12-20 | 0 | Details |
| US2676251A | Bistable blocking oscillator | Expired / Lapsed | 1950-12-01 | 1954-04-20 | 0 | Details |
| US2674732A | Electronic variable delay circuits | Expired / Lapsed | 1952-12-02 | 1954-04-06 | 0 | Details |
| US2674733A | Electronic sorting system | Expired / Lapsed | 1952-12-02 | 1954-04-06 | 0 | Details |
| US2665411A | Double interpolation method and apparatus for measuring tim… | Expired / Lapsed | 1951-03-15 | 1954-01-05 | 0 | Details |
| US2665410A | Method and apparatus for automatically measuring time inter… | Expired / Lapsed | 1951-03-15 | 1954-01-05 | 0 | Details |
| US2662505A | Hydraulic impact tool | Expired / Lapsed | 1951-06-16 | 1953-12-15 | 0 | Details |
| US2660405A | Cutting tool and method of making | Expired / Lapsed | 1947-07-11 | 1953-11-24 | 0 | Details |
| US2638585A | Radio-locator system | Expired / Lapsed | 1947-09-02 | 1953-05-12 | 0 | Details |
| US2616264A | Hydraulic by-pass control | Expired / Lapsed | 1948-02-06 | 1952-11-04 | 0 | Details |
| US2407642A | Method of treating cutter teeth | Expired / Lapsed | 1945-11-23 | 1946-09-17 | 0 | Details |
| US2399327A | Locking means for pressure chamber doors | Expired / Lapsed | 1943-05-22 | 1946-04-30 | 0 | Details |
| US2386555A | Dead reckoning navigation device for aircraft | Expired / Lapsed | 1941-07-29 | 1945-10-09 | 0 | Details |
| US2293997A | Method of making tool joints | Expired / Lapsed | 1939-08-01 | 1942-08-25 | 0 | Details |
| US2257335A | Tool joint welding | Expired / Lapsed | 1940-04-05 | 1941-09-30 | 0 | Details |
| US2128102A | Overshot | Expired / Lapsed | 1936-06-22 | 1938-08-23 | 0 | Details |
| US2104822A | Drill cutter | Expired / Lapsed | 1936-07-30 | 1938-01-11 | 0 | Details |
| US2091903A | Method of treating tungsten carbide | Expired / Lapsed | 1935-11-04 | 1937-08-31 | 0 | Details |
| US2086667A | Method of engaging tool joint threads | Expired / Lapsed | 1935-02-18 | 1937-07-13 | 0 | Details |
| US2044590A | Blow-out preventer | Expired / Lapsed | 1932-12-20 | 1936-06-16 | 0 | Details |
| US2030458A | Resilient seat for valves | Expired / Lapsed | 1931-04-06 | 1936-02-11 | 0 | Details |
| US1993260A | Oscillating joint | Expired / Lapsed | 1929-08-05 | 1935-03-05 | 0 | Details |
| US1947586A | Flow choke | Expired / Lapsed | 1931-04-24 | 1934-02-20 | 0 | Details |
| US1909075A | Coupling for double pipe sections | Expired / Lapsed | 1929-03-12 | 1933-05-16 | 0 | Details |
| US1905039A | Antifriction thread for shafts | Expired / Lapsed | 1931-05-16 | 1933-04-25 | 0 | Details |
| US1867737A | Carburizing furnace | Expired / Lapsed | 1930-07-11 | 1932-07-19 | 0 | Details |
| US1854911A | Earth boring drill | Expired / Lapsed | 1929-03-12 | 1932-04-19 | 0 | Details |
| US1725235A | Valve support | Expired / Lapsed | 1926-09-23 | 1929-08-20 | 0 | Details |
| US1641296A | Load indicator | Expired / Lapsed | 1926-05-03 | 1927-09-06 | 0 | Details |
| US1503476A | Apparatus for well drilling | Expired / Lapsed | 1921-05-24 | 1924-08-05 | 0 | Details |