Inventor · disambiguated record
Douglas R. Hamburg
Also filed as: HAMBURG DOUGLAS R · HAMBURG DOUGLAS RAY
67 granted patents·2,143 citations·filing 1976–2001
99Inventor score
Top patents by PatentIndex Score
67 records- 0199US5452576AAir/fuel control with on-board emission measurementFORD MOTOR CO·Filed 1994·Granted Sep 26, 1995·144 cites·20 claims
- 0297US5054454AFuel vapor recovery control systemFORD MOTOR CO·Filed 1989·Granted Oct 8, 1991·61 cites·18 claims
- 0397US4748959ARegulation of engine parameters in response to vapor recovery purge systemsFORD MOTOR CO·Filed 1987·Granted Jun 7, 1988·85 cites·12 claims
- 0495US4641623AAdaptive feedforward air/fuel ratio control for vapor recovery purge systemFORD MOTOR CO·Filed 1985·Granted Feb 10, 1987·51 cites·10 claims
- 0594US5598703AAir/fuel control system for an internal combustion engineFORD MOTOR CO·Filed 1995·Granted Feb 4, 1997·77 cites·10 claims
- 0694US5080078AFuel vapor recovery control systemFORD MOTOR CO·Filed 1989·Granted Jan 14, 1992·54 cites·4 claims
- 0794US5077970AMethod of on-board detection of automotive catalyst degradationFORD MOTOR CO·Filed 1990·Granted Jan 7, 1992·97 cites·28 claims
- 0892US5048493ASystem for internal combustion engineFORD MOTOR CO·Filed 1990·Granted Sep 17, 1991·71 cites·13 claims
- 0991US5483946AEngine control system with rapid catalyst warm-upFORD MOTOR CO·Filed 1994·Granted Jan 16, 1996·58 cites·21 claims
- 1091US5359852AAir fuel ratio feedback controlFORD MOTOR CO·Filed 1993·Granted Nov 1, 1994·63 cites·5 claims
- 1191US5265417AMethod and apparatus for determining the hydrocarbon conversion efficiency of a catalytic converterFORD MOTOR CO·Filed 1993·Granted Nov 30, 1993·81 cites·14 claims
- 1291US5090388AAir/fuel ratio control with adaptive learning of purged fuel vaporsFORD MOTOR CO·Filed 1990·Granted Feb 25, 1992·66 cites·13 claims
- 1390US6161531AEngine control system with adaptive cold-start air/fuel ratio controlFORD MOTOR CO·Filed 1999·Granted Dec 19, 2000·63 cites·7 claims
- 1489US4789939AAdaptive air fuel control using hydrocarbon variability feedbackFORD MOTOR CO·Filed 1986·Granted Dec 6, 1988·33 cites·2 claims
- 1587US5060621AVapor purge control systemFORD MOTOR CO·Filed 1989·Granted Oct 29, 1991·31 cites·11 claims
- 1686US5255512AAir fuel ratio feedback controlFORD MOTOR CO·Filed 1992·Granted Oct 26, 1993·45 cites·6 claims
- 1786US5048492AAir/fuel ratio control system and method for fuel vapor purgingFORD MOTOR CO·Filed 1990·Granted Sep 17, 1991·43 cites·15 claims
- 1884US5177464ACatalyst monitoring using a hydrocarbon sensorFORD MOTOR CO·Filed 1991·Granted Jan 5, 1993·56 cites·8 claims
- 1984US4677956ASolenoid duty cycle modulation for dynamic control of refueling vapor purge transient flowFORD MOTOR CO·Filed 1985·Granted Jul 7, 1987·28 cites·2 claims
- 2082US4736724AAdaptive lean limit air fuel control using combustion pressure sensor feedbackFORD MOTOR CO·Filed 1986·Granted Apr 12, 1988·32 cites·6 claims
- 2181US5877413ASensor calibration for catalyst deterioration detectionFORD GLOBAL TECH INC·Filed 1998·Granted Mar 2, 1999·46 cites·11 claims
- 2281US5325711AAir-fuel modulation for oxygen sensor monitoringFORD MOTOR CO·Filed 1993·Granted Jul 5, 1994·34 cites·21 claims
- 2379US6253542B1Air-fuel ratio feedback controlFORD GLOBAL TECH INC·Filed 1999·Granted Jul 3, 2001·37 cites·14 claims
- 2479US5408215ACatalyst monitoring using a hydrocarbon sensorFORD MOTOR CO·Filed 1991·Granted Apr 18, 1995·53 cites·9 claims
- 2579US5291673AOxygen sensor system with signal correctionFORD MOTOR CO·Filed 1992·Granted Mar 8, 1994·37 cites·9 claims
- 2677US5363091ACatalyst monitoring using ego sensorsFORD MOTOR CO·Filed 1991·Granted Nov 8, 1994·42 cites·24 claims
- 2777US5282360APost-catalyst feedback controlFORD MOTOR CO·Filed 1992·Granted Feb 1, 1994·28 cites·12 claims
- 2876US5375415AAdaptive control of EGO sensor outputFORD MOTOR CO·Filed 1993·Granted Dec 27, 1994·27 cites·18 claims
- 2976US4664087AVariable rate purge control for refueling vapor recovery systemFORD MOTOR CO·Filed 1985·Granted May 12, 1987·21 cites·6 claims
- 3075US5365216ACatalyst monitoring using ego sensorsFORD MOTOR CO·Filed 1994·Granted Nov 15, 1994·35 cites·5 claims
- 3173US5584176AEngine control to achieve rapid catalyst warm-upFORD MOTOR CO·Filed 1994·Granted Dec 17, 1996·25 cites·9 claims
- 3272US5099647ACombined engine air/fuel control and catalyst monitoringFORD MOTOR CO·Filed 1991·Granted Mar 31, 1992·38 cites·14 claims
- 3368US4161931AVapor temperature controlled exhaust gas heat exchangerFORD MOTOR CO·Filed 1978·Granted Jul 24, 1979·22 cites·3 claims
- 3466US4377143ALean air-fuel control using stoichiometric air-fuel sensorsFORD MOTOR CO·Filed 1980·Granted Mar 22, 1983·14 cites·14 claims
- 3565US5370101AFuel controller with oxygen sensor monitoring and offset correctionFORD MOTOR CO·Filed 1993·Granted Dec 6, 1994·21 cites·17 claims
- 3665US4715340AReduction of HC emissions for vapor recovery purge systemsFORD MOTOR CO·Filed 1987·Granted Dec 29, 1987·14 cites·13 claims
- 3765US4099499AVapor temperature controlled exhaust gas heat exchangerFORD MOTOR CO·Filed 1976·Granted Jul 11, 1978·19 cites·2 claims
- 3864US6311680B1Active adaptive bias for closed loop air/fuel control systemFORD GLOBAL TECH INC·Filed 2000·Granted Nov 6, 2001·11 cites·9 claims
- 3963US5515826AEngine air/fuel control systemFORD MOTOR CO·Filed 1995·Granted May 14, 1996·21 cites·16 claims
- 4061US5392599AEngine air/fuel control with adaptive correction of ego sensor outputFORD MOTOR CO·Filed 1994·Granted Feb 28, 1995·17 cites·16 claims
- 4161US5383333AMethod for biasing a hego sensor in a feedback control systemFORD MOTOR CO·Filed 1993·Granted Jan 24, 1995·17 cites·13 claims
- 4261US5341643AFeedback control systemFORD MOTOR CO·Filed 1993·Granted Aug 30, 1994·17 cites·8 claims
- 4360US5822979ACatalyst monitoring using a hydrocarbon sensorFORD GLOBAL TECH INC·Filed 1997·Granted Oct 20, 1998·20 cites·3 claims
- 4460US5067469AFuel vapor recovery system and methodFORD MOTOR CO·Filed 1991·Granted Nov 26, 1991·18 cites·12 claims
- 4558US5265416AOn-board catalytic converter efficiency monitoringFORD MOTOR CO·Filed 1992·Granted Nov 30, 1993·18 cites·19 claims
- 4657US6131439ACatalyst deterioration detection with sensor calibrationFORD GLOBAL TECH INC·Filed 1998·Granted Oct 17, 2000·22 cites·14 claims
- 4757US5329764AAir/fuel feedback control systemFORD MOTOR CO·Filed 1993·Granted Jul 19, 1994·15 cites·7 claims
- 4856US4094275AVaporized liquid fuel delivery and metering systemFORD MOTOR CO·Filed 1976·Granted Jun 13, 1978·14 cites·12 claims
- 4955US5511526AEngine air/fuel control with adaptive learningFORD MOTOR CO·Filed 1995·Granted Apr 30, 1996·16 cites·17 claims
- 5052US5503134AFuel controller with air/fuel transient compensationFORD MOTOR CO·Filed 1993·Granted Apr 2, 1996·14 cites·10 claims
Showing the top 50 of 67 patent records by PatentIndex Score.
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