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
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →