Assignee
HYDRA RIG INC
US·19 granted patents·1,452 citations·filing 1977–2000
Top patents by PatentIndex Score
19 records- 0197US5360139ALiquified natural gas fueling facilityHYDRA RIG INC·Filed 1993·Granted Nov 1, 1994·140 cites·23 claims
- 0297US4290495APortable workover rig with extendable mast substructure, platform mounted drawworks and adjustable wellhead anchorHYDRA RIG INC·Filed 1979·Granted Sep 22, 1981·223 cites·57 claims
- 0396US4494415ALiquid nitrogen pumpHYDRA RIG INC·Filed 1982·Granted Jan 22, 1985·116 cites·17 claims
- 0495US5301723AApparatus and method of preventing ice accumulation on coupling valves for cryogenic fluidsHYDRA RIG INC·Filed 1992·Granted Apr 12, 1994·117 cites·23 claims
- 0594US4585061AApparatus for inserting and withdrawing coiled tubing with respect to a wellHYDRA RIG INC·Filed 1983·Granted Apr 29, 1986·144 cites·30 claims
- 0694US4436177ATruck operator's cab with equipment control stationHYDRA RIG INC·Filed 1982·Granted Mar 13, 1984·69 cites·11 claims
- 0791US6216780B1Coiled tubing injector with improved tractionHYDRA RIG INC·Filed 2000·Granted Apr 17, 2001·52 cites·9 claims
- 0889US5315831ALiquid natural gas and compressed natural gas total fueling systemHYDRA RIG INC·Filed 1993·Granted May 31, 1994·98 cites·23 claims
- 0988US4324194AStabilized hoist rig for deep ocean mining vesselHYDRA RIG INC·Filed 1979·Granted Apr 13, 1982·38 cites·4 claims
- 1088US4128229AHoist apparatus with dual mast structure and compound power transmission systemHYDRA RIG INC·Filed 1977·Granted Dec 5, 1978·34 cites·21 claims
- 1187US5465583ALiquid methane fueling facilityHYDRA RIG INC·Filed 1993·Granted Nov 14, 1995·56 cites·21 claims
- 1283US6173769B1Universal carrier for grippers in a coiled tubing injectorHYDRA RIG INC·Filed 1998·Granted Jan 16, 2001·99 cites·24 claims
- 1383US5309990ACoiled tubing injectorHYDRA RIG INC·Filed 1991·Granted May 10, 1994·118 cites·20 claims
- 1478US4478561AHydraulic intensifierHYDRA RIG INC·Filed 1982·Granted Oct 23, 1984·30 cites·18 claims
- 1574US4738115ALiquified gas pumping and vaporization systemHYDRA RIG INC·Filed 1987·Granted Apr 19, 1988·31 cites·33 claims
- 1667US4417846ATraveling block elevator latch assemblyHYDRA RIG INC·Filed 1977·Granted Nov 29, 1983·28 cites·19 claims
- 1762US6059029ACoiled tubing injectorHYDRA RIG INC·Filed 1998·Granted May 9, 2000·42 cites·17 claims
- 1859US4257456APressure compensated spool valveHYDRA RIG INC·Filed 1979·Granted Mar 24, 1981·11 cites·11 claims
- 1939US4390315AFire fighting boom assembly for service vesselHYDRA RIG INC·Filed 1980·Granted Jun 28, 1983·6 cites·6 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →