Inventor · disambiguated record
Sanshiro Obara
Also filed as: OBARA SANSHIRO
47 granted patents·5 pending applications·2,078 citations·filing 1976–2006
99Inventor score
Top patents by PatentIndex Score
52 records- 0197US5355749AControl apparatus and control method for motor drive vehicleHITACHI LTD·Filed 1992·Granted Oct 18, 1994·214 cites·13 claims
- 0295US6555988B2Motor control deviceHITACHI LTD·Filed 2000·Granted Apr 29, 2003·67 cites·13 claims
- 0394US5659235ADrive controller and control method for electric vehicleHITACHI LTD·Filed 1996·Granted Aug 19, 1997·89 cites·10 claims
- 0493US5481168AElectric vehicle torque controllerHITACHI LTD·Filed 1994·Granted Jan 2, 1996·67 cites·31 claims
- 0590US5920161ADriving system for permanent magnet type synchronous machine suitable for electric vehicle and driving control method using the sameHITACHI LTD·Filed 1998·Granted Jul 6, 1999·140 cites·12 claims
- 0690US5914582APermanent magnet synchronous motor controller and electric vehicle controllerHITACHI LTD·Filed 1998·Granted Jun 22, 1999·136 cites·14 claims
- 0790US5357181AFailure detection method for electric vehicles and fail-safe control method using this methodHITACHI LTD·Filed 1993·Granted Oct 18, 1994·123 cites·24 claims
- 0889US6791227B2Dynamo electric machine and method of manufacturing the sameHITACHI LTD·Filed 2001·Granted Sep 14, 2004·36 cites·12 claims
- 0985US5345155AControl system for electric vehicleHITACHI LTD·Filed 1992·Granted Sep 6, 1994·100 cites·7 claims
- 1083US6198256B1Control apparatus for a synchronous generator system and a hybrid-type electric vehicle using itHITACHI LTD·Filed 1999·Granted Mar 6, 2001·58 cites·16 claims
- 1182US5650700AElectric vehicle torque controllerHITACHI LTD·Filed 1995·Granted Jul 22, 1997·43 cites·4 claims
- 1281US6429565B1Permanent magnet type electric rotating machine and hybrid electric vehicle using itHITACHI LTD·Filed 2000·Granted Aug 6, 2002·36 cites·10 claims
- 1381US5349351AAnalog-digital converting deviceHITACHI LTD·Filed 1992·Granted Sep 20, 1994·46 cites·12 claims
- 1479US5309073AElectric vehicle control deviceHITACHI LTD·Filed 1992·Granted May 3, 1994·67 cites·21 claims
- 1578US5631819APower converterHITACHI LTD·Filed 1996·Granted May 20, 1997·41 cites·14 claims
- 1676US5467275AControl apparatus for electric vehicleHITACHI LTD·Filed 1993·Granted Nov 14, 1995·51 cites·26 claims
- 1773US5726890AControl apparatus for electric vehicleHITACHI LTD·Filed 1995·Granted Mar 10, 1998·27 cites·11 claims
- 1873US5495908AElectric car control systemHITACHI LTD·Filed 1993·Granted Mar 5, 1996·40 cites·12 claims
- 1972US5610483AControl equipment for electric vehicle and control method thereofHITACHI LTD·Filed 1995·Granted Mar 11, 1997·44 cites·5 claims
- 2069US5877601AControl system for electric vehicle and control method therefor in which an inverter relay is controlled at the time of its re-closing after being disconnectedHITACHI LTD·Filed 1997·Granted Mar 2, 1999·41 cites·6 claims
- 2169US4712052ADigital servo-control systemHITACHI LTD·Filed 1985·Granted Dec 8, 1987·26 cites·3 claims
- 2268US6373219B1Motor control system and motor control methodHITACHI LTD·Filed 2000·Granted Apr 16, 2002·26 cites·14 claims
- 2368US5600215AController for electric vehicleHITACHI LTD·Filed 1995·Granted Feb 4, 1997·39 cites·10 claims
- 2467US5534764AVehicle driving control system having function for suppressing vibrationHITACHI LTD·Filed 1994·Granted Jul 9, 1996·44 cites·10 claims
- 2566US4276602AElectronic engine control apparatus having arrangement for varying fuel injection durationHITACHI LTD·Filed 1979·Granted Jun 30, 1981·15 cites·45 claims
- 2665US6320349B1Method of estimating field pole position of synchronous motor, motor controller, and electric vehicleFiled 1999·Granted Nov 20, 2001·47 cites·10 claims
- 2762US5661380AMethod and apparatus for operating an electric vehicle drive system during periods of sensor malfunctionHITACHI LTD·Filed 1995·Granted Aug 26, 1997·46 cites·6 claims
- 2861US6008617AMotor control device for high frequency AC driven motorHITACHI LTD·Filed 1998·Granted Dec 28, 1999·21 cites·3 claims
- 2959US4367530AControl apparatus for an internal combustion engineHITACHI LTD·Filed 1981·Granted Jan 4, 1983·16 cites·72 claims
- 3058US5677604AControl system and control method for electric automobileHITACHI LTD·Filed 1994·Granted Oct 14, 1997·34 cites·10 claims
- 3157US5994881AControl apparatus for a synchronous generator system and a hybrid-type electric vehicle using itHITACHI LTD·Filed 1997·Granted Nov 30, 1999·23 cites·18 claims
- 3257US4481819AMethod and apparatus for detecting metal wipe damages of plane bearingHITACHI LTD·Filed 1983·Granted Nov 13, 1984·17 cites·12 claims
- 3355US6255798B1Control apparatus for electric vehicleHITACHI LTD·Filed 1996·Granted Jul 3, 2001·34 cites·5 claims
- 3454US6236172B1Driving system for electric vehicleHITACHI LTD·Filed 1999·Granted May 22, 2001·31 cites·4 claims
- 3554US5994870AMethod of estimating field pole position of synchronous motor, motor controlled, and electric vehicleHITACHI LTD·Filed 1998·Granted Nov 30, 1999·30 cites·7 claims
- 3653US5289517ADigital pulse processing deviceHITACHI LTD·Filed 1991·Granted Feb 22, 1994·15 cites·20 claims
- 3752US5557181ABrake control apparatus for electric motor vehicleHITACHI LTD·Filed 1993·Granted Sep 17, 1996·25 cites·28 claims
- 3850US2006272870A1Hybrid electrical vehicle employing permanent magnetic type dynamo-electric machineHITACHI LTD·Filed 2006·Application pending·0 cites
- 3950US2007084652A1Hybrid Electrical Vehicle Employing Permanent Magnetic Type Dynamo-Electric MachineHITACHI LTD·Filed 2006·Application pending·0 cites
- 4049US6935012B2Dynamo electric machine and method of manufacturing the sameHITACHI CAR ENG CO LTD·Filed 2004·Granted Aug 30, 2005·3 cites·6 claims
- 4149US5841263AFrequency dependent current control system for an AC motorHITACHI LTD·Filed 1997·Granted Nov 24, 1998·27 cites·9 claims
- 4249US4373379AMethod and apparatus for detecting defects in a water cooling system of a hydrogen-cooled dynamic electric machineHITACHI LTD·Filed 1980·Granted Feb 15, 1983·13 cites·10 claims
- 4348US5418932AGeneration of width modulated pulses by relatively adjusting rising and falling edges upon comparison of counter with programmably stored valuesHITACHI LTD·Filed 1991·Granted May 23, 1995·22 cites·33 claims
- 4448US4058755AKramer system utilizing a commutatorless motorHITACHI LTD·Filed 1976·Granted Nov 15, 1977·8 cites·9 claims
- 4543US6963154B2Permanent magnet type electric rotating machine and hybrid electric vehicle using itHITACHI LTD·Filed 2002·Granted Nov 8, 2005·1 cites·12 claims
- 4642US2004112655A1Hybrid electric vehicle employing permanent magnetic type dynamo-electric machineHITACHI LTD·Filed 2003·Application pending·0 cites
- 4741US6154002AControl apparatus for permanent magnet electric motor used in electric motor vehicleHITACHI LTD·Filed 1999·Granted Nov 28, 2000·9 cites·3 claims
- 4841US5877607AElectric motor controller capable of performing stable current control during load disturbance and/or a regenerating modeHITACHI LTD·Filed 1996·Granted Mar 2, 1999·18 cites·36 claims
- 4941US2002112904A1Hybrid electric vehicle employing permanent magnetic type dynamo-electric machineHITACHI LTD·Filed 2002·Application pending·0 cites
- 5040US5631796AElectric vehicle control systemHITACHI LTD·Filed 1995·Granted May 20, 1997·16 cites·25 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
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