Inventor · disambiguated record
Donald L. Howlett
Also filed as: HOWLETT DONALD L
14 granted patents·263 citations·filing 1975–1998
93Inventor score
Files withTEXACO INC14
Top patents by PatentIndex Score
14 records- 0178US5396955AMethod to selectively affect permeability in a reservoir to control fluid flowTEXACO INC·Filed 1993·Granted Mar 14, 1995·65 cites·5 claims
- 0275US4112412ADigital seismic telemetry systemTEXACO INC·Filed 1976·Granted Sep 5, 1978·28 cites·5 claims
- 0373US5047992AElectromagnetically induced acoustic well loggingTEXACO INC·Filed 1990·Granted Sep 10, 1991·31 cites·25 claims
- 0470US5042611AMethod and apparatus for cross-well seismic surveyingTEXACO INC·Filed 1990·Granted Aug 27, 1991·33 cites·4 claims
- 0554US5537364AMethod and apparatus for conducting seismic surveys from a single well having both seismic sources and receivers deployed thereinTEXACO INC·Filed 1995·Granted Jul 16, 1996·28 cites·10 claims
- 0653US5351755AMethod and apparatus for establish the orientation of tools in a cased boreholeTEXACO INC·Filed 1993·Granted Oct 4, 1994·26 cites·10 claims
- 0749US4064480AMeans and method for recording seismic signalsTEXACO INC·Filed 1975·Granted Dec 20, 1977·12 cites·14 claims
- 0842US4177457AFloating point playback systemTEXACO INC·Filed 1977·Granted Dec 4, 1979·5 cites·10 claims
- 0939US6006855ABorehole seismic detector system employing stabilizersTEXACO INC·Filed 1998·Granted Dec 28, 1999·12 cites·21 claims
- 1036US4107644ASystem and method for digitally transmitting well logging informationTEXACO INC·Filed 1976·Granted Aug 15, 1978·7 cites·4 claims
- 1133US4697255AImplosion type energy source for seismic explorationTEXACO INC·Filed 1986·Granted Sep 29, 1987·5 cites·7 claims
- 1232US4727521ASeismic amplifier means and methodTEXACO INC·Filed 1986·Granted Feb 23, 1988·4 cites·12 claims
- 1330US4528650AStreamer cable multiplexing apparatusTEXACO INC·Filed 1982·Granted Jul 9, 1985·6 cites·9 claims
- 1430US4106010ALogarithmic analog-to-digital converterTEXACO INC·Filed 1976·Granted Aug 8, 1978·1 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →