Assignee
DEVELCO
18 granted patents·1,418 citations·filing 1974–1990
Top patents by PatentIndex Score
18 records- 0198US4710708AMethod and apparatus employing received independent magnetic field components of a transmitted alternating magnetic field for determining locationDEVELCO·Filed 1982·Granted Dec 1, 1987·658 cites·20 claims
- 0296US3967201AWireless subterranean signaling methodDEVELCO·Filed 1974·Granted Jun 29, 1976·182 cites·28 claims
- 0394US5089779AMethod and apparatus for measuring strata resistivity adjacent a boreholeDEVELCO·Filed 1990·Granted Feb 18, 1992·128 cites·36 claims
- 0492US3956690ATrimmed superconductive magnetic pickup coil circuitsDEVELCO·Filed 1974·Granted May 11, 1976·49 cites·9 claims
- 0588US4617960AVerification of a surface controlled subsurface actuating deviceDEVELCO·Filed 1985·Granted Oct 21, 1986·87 cites·9 claims
- 0684US4587741ABall inclinometerDEVELCO·Filed 1983·Granted May 13, 1986·40 cites·26 claims
- 0782US4787093ACombinatorial coded telemetryDEVELCO·Filed 1986·Granted Nov 22, 1988·65 cites·5 claims
- 0878US4908804ACombinatorial coded telemetry in MWDDEVELCO·Filed 1988·Granted Mar 13, 1990·54 cites·5 claims
- 0966US4823125AMethod and apparatus for stabilizing a communication sensor in a boreholeDEVELCO·Filed 1987·Granted Apr 18, 1989·35 cites·20 claims
- 1062US4646831APrecision connector for well instrumentationDEVELCO·Filed 1984·Granted Mar 3, 1987·30 cites·11 claims
- 1157US4736791ASubsurface device actuator requiring minimum powerDEVELCO·Filed 1985·Granted Apr 12, 1988·29 cites·5 claims
- 1250US5067114ACorrelation for combinational coded telemetryDEVELCO·Filed 1990·Granted Nov 19, 1991·23 cites·8 claims
- 1343US3965411AGradient wound trim coil for trimming a primary pickup coilDEVELCO·Filed 1974·Granted Jun 22, 1976·7 cites·7 claims
- 1440US4953616ASolenoid actuator and pulse driveDEVELCO·Filed 1988·Granted Sep 4, 1990·14 cites·5 claims
- 1534US4878053AActuation methodDEVELCO·Filed 1988·Granted Oct 31, 1989·9 cites·9 claims
- 1634US4221834ASuperconductive magnetic shield and method of making sameDEVELCO·Filed 1975·Granted Sep 9, 1980·5 cites·5 claims
- 1730US5027129AGimballed antennaDEVELCO·Filed 1989·Granted Jun 25, 1991·1 cites·8 claims
- 1830US4926188AGimballed antennaDEVELCO·Filed 1986·Granted May 15, 1990·2 cites·9 claims
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