Yutaka Taga
150Patents
37h-index
131Co-inventors
93Inventor score
Filing activity: Aug 8, 1974 → Aug 27, 2010
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 |
| US5635805A | Hybrid vehicle | Emerging Cross-Sectional Technologies | 136 | Expired |
| US5839533A | Apparatus for controlling electric generator of hybrid drive vehicle to control regenerative brake depending upon selected degree of drive source brake application | Emerging Cross-Sectional Technologies | 122 | Expired |
| US6306057A | Hybrid drive system | Emerging Cross-Sectional Technologies | 120 | Expired |
| US6098733A | Hybrid drive system for motor vehicle | Emerging Cross-Sectional Technologies | 117 | 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 |
| US7223200B2 | Hybrid-vehicle drive system and operation method with a transmission | Emerging Cross-Sectional Technologies | 111 | Expired |
| US5895333A | Hybrid vehicle drive system, wherein mechanism for synthesizing engine and motor outputs is disposed adjacent to transmission | Emerging Cross-Sectional Technologies | 100 | Expired |
| US5915801A | Regenerative brake controller for controlling value of regenerative braking torque simulating engine braking torque | Emerging Cross-Sectional Technologies | 90 | 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 |
| 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 |
| US6258001A | Vehicle drive train | Emerging Cross-Sectional Technologies | 74 | Expired |
| US6340339B1 | Vehicle drive device | Emerging Cross-Sectional Technologies | 71 | Expired |
| US6459980B1 | Vehicle braked with motor torque and method of controlling the same | Emerging Cross-Sectional Technologies | 69 | 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 |
| US4523281A | Automatic transmission controller for automobiles | Mechanical Engineering; Lighting; Heating | 64 | Expired |
| US5722911A | Vehicle control apparatus adapted to charge energy storage device by generator driven by surplus engine power which changes with required vehicle drive force | Emerging Cross-Sectional Technologies | 64 | Expired |
| US6719076B1 | Vehicle braked by motor torque and method of controlling the vehicle | Emerging Cross-Sectional Technologies | 62 | Expired |
| US5927415A | Hybrid vehicle controller | Emerging Cross-Sectional Technologies | 62 | Expired |
| US5909720A | Driving system with engine starting control | Emerging Cross-Sectional Technologies | 59 | 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 |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.