Hiroshi Hata
66Patents
19h-index
93Co-inventors
87Inventor score
Filing activity: Jun 7, 1979 → Oct 4, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5856709A | Hybrid vehicle drive system having clutch between engine and synthesizing/distributing mechanism which is operatively connected to motor/generator | Emerging Cross-Sectional Technologies | 237 | Expired |
| US5841201A | Hybrid vehicle drive system having a drive mode using both engine and electric motor | Emerging Cross-Sectional Technologies | 165 | Expired |
| US5789882A | Vehicle control apparatus adapted to select engine-or motor-drive mode based on physical quantity reflecting energy conversion efficiencies in motor-drive mode | Emerging Cross-Sectional Technologies | 113 | Expired |
| US6081042A | Hybrid vehicle drive system including controllable device between engine and electric motor and vehicle drive wheels, and apparatus for controlling the device depending upon selected operation mode of the system | Emerging Cross-Sectional Technologies | 87 | Expired |
| US5887670A | Vehicle power transmitting system having devices for electrically and mechanically disconnecting power source and vehicle drive wheel upon selection of neutral state | Emerging Cross-Sectional Technologies | 86 | Expired |
| US5982045A | Hybrid vehicle drive system adapted to prevent concurrent mode change and transmission shifting or torque distribution ratio change | Emerging Cross-Sectional Technologies | 79 | Expired |
| US5818116A | Starting control apparatus for internal combustion engine and method of the same | Emerging Cross-Sectional Technologies | 78 | Expired |
| US5951614A | Vehicle hybrid drive system control apparatus adapted to reduce transmission input torque upon transmission shifting, by using engine and/or motor/generator | Emerging Cross-Sectional Technologies | 75 | Expired |
| US5923093A | Hybrid vehicle drive system adapted to assure smooth brake application by motor/generator or engine | Emerging Cross-Sectional Technologies | 65 | Expired |
| US5875691A | Hybrid drive system | Emerging Cross-Sectional Technologies | 65 | Expired |
| US6886648B1 | Power output device, hybrid vehicle, and method of controlling them | Emerging Cross-Sectional Technologies | 63 | Expired |
| US5927415A | Hybrid vehicle controller | Emerging Cross-Sectional Technologies | 62 | Expired |
| US5833570A | Vehicle transmission shift control apparatus wherein torque of motor connected to automatic transmission is controlled to reduce shifting shock of transmission | Emerging Cross-Sectional Technologies | 59 | Expired |
| US5935040A | Hybrid vehicle drive system adapted to produce substantially constant vehicle drive force under the same vehicle running condition, even in different modes of operation | Emerging Cross-Sectional Technologies | 56 | Expired |
| US5873426A | Hybrid vehicle drive system having means for using at least engine as drive power source in special vehicle operating state, to assure sufficient drive force | Emerging Cross-Sectional Technologies | 42 | Expired |
| US6691809B2 | Power output apparatus, motor vehicle including power output apparatus and control methods thereof | Emerging Cross-Sectional Technologies | 30 | Expired |
| USD426855S | Automobile tire | General | 30 | Expired |
| US5993169A | Oil pressure generator having at least two coaxial rotating power sources and power output apparatus | Emerging Cross-Sectional Technologies | 28 | Expired |
| US7081060B2 | Power transmission system | Emerging Cross-Sectional Technologies | 24 | Expired |
| US7000718B2 | Power output apparatus and hybrid vehicle with power output apparatus mounted thereon | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6582312B2 | Torque fluctuation absorbing apparatus having structure for reducing misalignment of torque limiter during assembling thereof, and method for assembling the same | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US9070938B2 | Terminal lead | Emerging Cross-Sectional Technologies | 12 | Active |
| USD472513S1 | Automobile tire | General | 10 | Expired |
| US8097997B2 | Driving device with rotating electric machine | Emerging Cross-Sectional Technologies | 8 | Active |
| USD587189S1 | Automobile tire tread | General | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.