Inventor · disambiguated record
Tsutomu Ohmae
Also filed as: MARUMOTO KATSUJI · OHMAE TSUTOMU
17 granted patents·1,130 citations·filing 1975–1997
96Inventor score
Top patents by PatentIndex Score
17 records- 0198US5549172AElectric vehicle drive system and drive methodHITACHI LTD·Filed 1994·Granted Aug 27, 1996·201 cites·24 claims
- 0297US5355749AControl apparatus and control method for motor drive vehicleHITACHI LTD·Filed 1992·Granted Oct 18, 1994·214 cites·13 claims
- 0393US5481168AElectric vehicle torque controllerHITACHI LTD·Filed 1994·Granted Jan 2, 1996·67 cites·31 claims
- 0492US5414339AElectric vehicle control systemHITACHI LTD·Filed 1993·Granted May 9, 1995·139 cites·34 claims
- 0592US4869334AElectric motor-driven power steering apparatusHITACHI LTD·Filed 1988·Granted Sep 26, 1989·70 cites·17 claims
- 0685US4875539AElectric power steering control systemHITACHI LTD·Filed 1988·Granted Oct 24, 1989·45 cites·20 claims
- 0782US5650700AElectric vehicle torque controllerHITACHI LTD·Filed 1995·Granted Jul 22, 1997·43 cites·4 claims
- 0882US5583406AControl method and system for regeneration braking of an electric vehicleHITACHI LTD·Filed 1994·Granted Dec 10, 1996·89 cites·15 claims
- 0981US4865148AVehicle height control apparatus responsive to power steering operationHITACHI LTD·Filed 1988·Granted Sep 12, 1989·45 cites·6 claims
- 1079US5309073AElectric vehicle control deviceHITACHI LTD·Filed 1992·Granted May 3, 1994·67 cites·21 claims
- 1176US4584528ASpeed detecting method and apparatusHITACHI LTD·Filed 1982·Granted Apr 22, 1986·24 cites·10 claims
- 1276US4037144AControl device for use in shunt motorAGENCY IND SCIENCE TECHN·Filed 1975·Granted Jul 19, 1977·30 cites·4 claims
- 1374US4174645AAutomatic change-gear control device for use in electromobileAGENCY IND SCIENCE TECHN·Filed 1976·Granted Nov 20, 1979·29 cites·2 claims
- 1470US4500820AProtective control apparatus for electrical vehicleHITACHI LTD·Filed 1981·Granted Feb 19, 1985·23 cites·5 claims
- 1565US4218730ATransistor switching apparatus for use in the control of a D.C. loadHITACHI LTD·Filed 1978·Granted Aug 19, 1980·14 cites·11 claims
- 1662US4926960AElectric power steering apparatus for vehicleHITACHI LTD·Filed 1988·Granted May 22, 1990·21 cites·4 claims
- 1741US5821588ATransistor and semiconductor deviceSHARP KK·Filed 1997·Granted Oct 13, 1998·9 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →