Assignee
WESTECH GEOPHYSICAL INC
US·8 granted patents·299 citations·filing 1990–1995
Top patents by PatentIndex Score
8 records- 0183US5493626AReduced diameter down-hole instrument electrical/optical fiber cableWESTECH GEOPHYSICAL INC·Filed 1994·Granted Feb 20, 1996·94 cites·19 claims
- 0276US5140319AVideo logging system having remote power sourceWESTECH GEOPHYSICAL INC·Filed 1990·Granted Aug 18, 1992·61 cites·26 claims
- 0365US5202944ACommunication and power cableWESTECH GEOPHYSICAL INC·Filed 1991·Granted Apr 13, 1993·44 cites·10 claims
- 0463US5402165ADual lighting system and method for a video loggingWESTECH GEOPHYSICAL INC·Filed 1993·Granted Mar 28, 1995·26 cites·15 claims
- 0556US5355128AVideo logging system having an optical communications linkWESTECH GEOPHYSICAL INC·Filed 1993·Granted Oct 11, 1994·28 cites·21 claims
- 0649US5550411ADownhole instrument power supply system using shunt voltage regulationWESTECH GEOPHYSICAL INC·Filed 1995·Granted Aug 27, 1996·12 cites·20 claims
- 0740US5550331ASystem and method of protecting instruments from down-hole fluidsWESTECH GEOPHYSICAL INC·Filed 1995·Granted Aug 27, 1996·19 cites·18 claims
- 0839US5440081ASystem and method of protecting optical elements from down-hole fluidsWESTECH GEOPHYSICAL INC·Filed 1994·Granted Aug 8, 1995·15 cites·23 claims
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