Assignee
HYDRIL
8 granted patents·334 citations·filing 1978–1979
Top patents by PatentIndex Score
8 records- 0193US4161332ADovetail connection for pin and box jointsHYDRIL·Filed 1978·Granted Jul 17, 1979·75 cites·15 claims
- 0291US4192533ADovetail connection for pin and box jointsHYDRIL·Filed 1978·Granted Mar 11, 1980·86 cites·8 claims
- 0383US4240503ABlowout preventer shearing and sealing ramsHYDRIL·Filed 1979·Granted Dec 23, 1980·60 cites·31 claims
- 0473US4195668AHigh capacity pulsation dampener or surge absorberHYDRIL·Filed 1979·Granted Apr 1, 1980·33 cites·17 claims
- 0563US4249599AWell safety systemHYDRIL·Filed 1979·Granted Feb 10, 1981·25 cites·5 claims
- 0661US4186776APulsation dampener or surge absorberHYDRIL·Filed 1978·Granted Feb 5, 1980·23 cites·1 claims
- 0754US4205707APipe protectorHYDRIL·Filed 1978·Granted Jun 3, 1980·23 cites·15 claims
- 0846US4184265AThread gageHYDRIL·Filed 1978·Granted Jan 22, 1980·9 cites·11 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →