Assignee
SCHLUMBERGER IND LTD
GB·27 granted patents·964 citations·filing 1987–1997
Top patents by PatentIndex Score
27 records- 0195US5024104ACombined output and drive circuit for a mass flow transducerSCHLUMBERGER IND LTD·Filed 1989·Granted Jun 18, 1991·79 cites·16 claims
- 0287US5355513ATransponder with reply frequency derived from frequency of received interrogation signalSCHLUMBERGER IND LTD·Filed 1990·Granted Oct 11, 1994·140 cites·9 claims
- 0386US5621419ACircular slot antennaSCHLUMBERGER IND LTD·Filed 1995·Granted Apr 15, 1997·109 cites·16 claims
- 0477US5022014AUltrasonic temperature sensors, and ultrasonic waveguide connectors for use therewithSCHLUMBERGER IND LTD·Filed 1989·Granted Jun 4, 1991·41 cites·33 claims
- 0576US5249463AMeasurement of liquid levelSCHLUMBERGER IND LTD·Filed 1992·Granted Oct 5, 1993·37 cites·6 claims
- 0676US4989329ARotary displacement transducersSCHLUMBERGER IND LTD·Filed 1989·Granted Feb 5, 1991·30 cites·10 claims
- 0774US5953371AMultipoint to point radiocommunications networkSCHLUMBERGER IND LTD·Filed 1997·Granted Sep 14, 1999·96 cites·2 claims
- 0871US6011755AElectronic time switchesSCHLUMBERGER IND LTD·Filed 1996·Granted Jan 4, 2000·60 cites·15 claims
- 0971US5044207AMass flow measurementSCHLUMBERGER IND LTD·Filed 1988·Granted Sep 3, 1991·33 cites·5 claims
- 1069US5089695ASolid state sensor with dual resonant vibratable membersSCHLUMBERGER IND LTD·Filed 1990·Granted Feb 18, 1992·26 cites·4 claims
- 1168US5386714AResonant cavity gas density sensorSCHLUMBERGER IND LTD·Filed 1991·Granted Feb 7, 1995·30 cites·28 claims
- 1268US4972077AWavelength multiplexed optical transducer with a swept wavelength optical sourceSCHLUMBERGER IND LTD·Filed 1989·Granted Nov 20, 1990·18 cites·16 claims
- 1366US5286109ADistributed temperature sensorSCHLUMBERGER IND LTD·Filed 1993·Granted Feb 15, 1994·32 cites·7 claims
- 1466US5150619AVortex flowmetersSCHLUMBERGER IND LTD·Filed 1990·Granted Sep 29, 1992·33 cites·14 claims
- 1564US5048351AMass flow sensorSCHLUMBERGER IND LTD·Filed 1989·Granted Sep 17, 1991·20 cites·12 claims
- 1663US5105665ASensorsSCHLUMBERGER IND LTD·Filed 1990·Granted Apr 21, 1992·24 cites·15 claims
- 1762US4962671ASingle vibrating tube transducersSCHLUMBERGER IND LTD·Filed 1988·Granted Oct 16, 1990·22 cites·14 claims
- 1857US5044769ATemperature sensorsSCHLUMBERGER IND LTD·Filed 1990·Granted Sep 3, 1991·23 cites·16 claims
- 1957US4972076ASolid state sensor with dual resonant vibratable membersSCHLUMBERGER IND LTD·Filed 1989·Granted Nov 20, 1990·14 cites·12 claims
- 2053US5024358AThermal-insulated fluid receptacle removably supported on bicycle frameSCHLUMBERGER IND LTD·Filed 1989·Granted Jun 18, 1991·22 cites·7 claims
- 2152US5195374ASensor systemsSCHLUMBERGER IND LTD·Filed 1991·Granted Mar 23, 1993·16 cites·9 claims
- 2251US4866987AOptical transducer systemsSCHLUMBERGER IND LTD·Filed 1988·Granted Sep 19, 1989·11 cites·10 claims
- 2346US5152173AOptical sensing systemsSCHLUMBERGER IND LTD·Filed 1990·Granted Oct 6, 1992·12 cites·7 claims
- 2446US4909081ASystems for detecting magnetic particles in fluidsSCHLUMBERGER IND LTD·Filed 1989·Granted Mar 20, 1990·12 cites·7 claims
- 2537US5146157ACalculation apparatus for an electronic meterSCHLUMBERGER IND LTD·Filed 1990·Granted Sep 8, 1992·8 cites·3 claims
- 2635US5171983ARelative position transducer for oscillating and scanning a read head over a coded track regionSCHLUMBERGER IND LTD·Filed 1990·Granted Dec 15, 1992·8 cites·24 claims
- 2733US4871886AElectronic key and receptacle thereforSCHLUMBERGER IND LTD·Filed 1987·Granted Oct 3, 1989·8 cites·19 claims
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