Assignee
EXPLORATION LOGGING INC
US·18 granted patents·931 citations·filing 1978–1988
Top patents by PatentIndex Score
18 records- 0195US4216536ATransmitting well logging dataEXPLORATION LOGGING INC·Filed 1978·Granted Aug 5, 1980·142 cites·16 claims
- 0293US4903245ADownhole vibration monitoring of a drillstringEXPLORATION LOGGING INC·Filed 1988·Granted Feb 20, 1990·146 cites·12 claims
- 0390US4513403AData encoding and synchronization for pulse telemetryEXPLORATION LOGGING INC·Filed 1982·Granted Apr 23, 1985·91 cites·19 claims
- 0489US4386422AServo valve for well-logging telemetryEXPLORATION LOGGING INC·Filed 1980·Granted May 31, 1983·86 cites·20 claims
- 0584US4550392AApparatus for well logging telemetryEXPLORATION LOGGING INC·Filed 1982·Granted Oct 29, 1985·66 cites·19 claims
- 0682US4511829ADirect current control in inductive loadsEXPLORATION LOGGING INC·Filed 1982·Granted Apr 16, 1985·45 cites·12 claims
- 0777US4494072AWell logging apparatus with replaceable sensor carrying insulating sleeve disposed in rotation restrained position around a drill stringEXPLORATION LOGGING INC·Filed 1982·Granted Jan 15, 1985·48 cites·15 claims
- 0876US4904865AExternally mounted radioactivity detector for MWDEXPLORATION LOGGING INC·Filed 1988·Granted Feb 27, 1990·47 cites·22 claims
- 0974US4642800ANoise subtraction filterEXPLORATION LOGGING INC·Filed 1985·Granted Feb 10, 1987·70 cites·11 claims
- 1071US4338565AMethod and apparatus for measuring the movement of a spiral wound wire ropeEXPLORATION LOGGING INC·Filed 1980·Granted Jul 6, 1982·24 cites·11 claims
- 1169US4483393AWell logging apparatus and method for making sameEXPLORATION LOGGING INC·Filed 1982·Granted Nov 20, 1984·33 cites·6 claims
- 1258US4356629AMethod of making well logging apparatusEXPLORATION LOGGING INC·Filed 1980·Granted Nov 2, 1982·17 cites·4 claims
- 1357US4405021AApparatus for well logging while drillingEXPLORATION LOGGING INC·Filed 1981·Granted Sep 20, 1983·24 cites·29 claims
- 1456US4699352AApparatus for well logging telemetryEXPLORATION LOGGING INC·Filed 1985·Granted Oct 13, 1987·25 cites·7 claims
- 1555US4756188AMethod and apparatus for compensating for drilling line stretch in determining equipment depth in a well and for measurement of hookload on the traveling block of a drilling rigEXPLORATION LOGGING INC·Filed 1986·Granted Jul 12, 1988·24 cites·8 claims
- 1655US4336564ASolenoid control circuitEXPLORATION LOGGING INC·Filed 1980·Granted Jun 22, 1982·24 cites·5 claims
- 1743US4601100AMethod for making logging sleeveEXPLORATION LOGGING INC·Filed 1984·Granted Jul 22, 1986·12 cites·8 claims
- 1837US4312223ACarrier system for positioning sensors adjacent a wire ropeEXPLORATION LOGGING INC·Filed 1980·Granted Jan 26, 1982·7 cites·12 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →