Assignee
GRAY TOOL CO
US·22 granted patents·504 citations·filing 1975–1985
Top patents by PatentIndex Score
22 records- 0191US4452462ATemperature resistant joint packing with E-shaped spring sealGRAY TOOL CO·Filed 1983·Granted Jun 5, 1984·73 cites·10 claims
- 0285US4569503AValve with remote and manual actuation meansGRAY TOOL CO·Filed 1985·Granted Feb 11, 1986·46 cites·4 claims
- 0380US4612983AShear type gate valveGRAY TOOL CO·Filed 1985·Granted Sep 23, 1986·61 cites·6 claims
- 0473US4073562AWet connectorGRAY TOOL CO·Filed 1976·Granted Feb 14, 1978·33 cites·13 claims
- 0571US4090565AControl line tubing hangerGRAY TOOL CO·Filed 1976·Granted May 23, 1978·31 cites·18 claims
- 0670US4553589AFire-safe surface-controlled subsurface safety valve control line/wellhead connector and blowout preventerGRAY TOOL CO·Filed 1984·Granted Nov 19, 1985·40 cites·2 claims
- 0767US4540012ATemperature sensitive valve bonnet assemblyGRAY TOOL CO·Filed 1983·Granted Sep 10, 1985·23 cites·8 claims
- 0863US4627958ADensification of metal powder to produce cladding of valve interiors by isodynamic compressionGRAY TOOL CO·Filed 1983·Granted Dec 9, 1986·18 cites·14 claims
- 0963US4570659AFire resistant valveGRAY TOOL CO·Filed 1983·Granted Feb 18, 1986·20 cites·3 claims
- 1060US3990679AStem sealing for high pressure valve or the likeGRAY TOOL CO·Filed 1975·Granted Nov 9, 1976·21 cites·21 claims
- 1156US4562090AMethod for improving the density, strength and bonding of coatingsGRAY TOOL CO·Filed 1983·Granted Dec 31, 1985·24 cites·18 claims
- 1255US4552369AStem sealing for high pressure valveGRAY TOOL CO·Filed 1984·Granted Nov 12, 1985·19 cites·4 claims
- 1345US4477093AFire resistant connections and T-like sealing means thereforGRAY TOOL CO·Filed 1983·Granted Oct 16, 1984·14 cites·6 claims
- 1444US4477091AFire resistant connections and U-like sealing means thereforGRAY TOOL CO·Filed 1983·Granted Oct 16, 1984·13 cites·6 claims
- 1543US4534235ARotary stepper actuatorGRAY TOOL CO·Filed 1983·Granted Aug 13, 1985·11 cites·24 claims
- 1642US4116277AFull flow tubing plug with locked anchor and methodGRAY TOOL CO·Filed 1977·Granted Sep 26, 1978·10 cites·26 claims
- 1738US4511002AMultiple tubing hanger tie back system and methodGRAY TOOL CO·Filed 1983·Granted Apr 16, 1985·9 cites·13 claims
- 1838US4477092AFire resistant connections and dovetail-like sealing means thereforGRAY TOOL CO·Filed 1983·Granted Oct 16, 1984·11 cites·6 claims
- 1937US4643390AFail-safe valve actuatorGRAY TOOL CO·Filed 1985·Granted Feb 17, 1987·9 cites·5 claims
- 2034US4570724AStepwise rotary actuatorGRAY TOOL CO·Filed 1984·Granted Feb 18, 1986·10 cites·12 claims
- 2134US4483545AFire resistant connections and double ribbed sealing means thereforGRAY TOOL CO·Filed 1983·Granted Nov 20, 1984·5 cites·6 claims
- 2232US4047697AValve seat-to-seat connection for easy installation and removal of seatGRAY TOOL CO·Filed 1975·Granted Sep 13, 1977·3 cites·11 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →