Seitoku Kubo
83Patents
20h-index
83Co-inventors
91Inventor score
Filing activity: Aug 6, 1976 → Apr 25, 2003
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 |
| 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 |
| US5895333A | Hybrid vehicle drive system, wherein mechanism for synthesizing engine and motor outputs is disposed adjacent to transmission | Emerging Cross-Sectional Technologies | 100 | Expired |
| US5875691A | Hybrid drive system | Emerging Cross-Sectional Technologies | 65 | 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 |
| US4056988A | Driving system for use in motor vehicle | Mechanical Engineering; Lighting; Heating | 49 | Expired |
| US4963124A | Planetary gear transmission for motor vehicle | Mechanical Engineering; Lighting; Heating | 48 | Expired |
| US5725064A | Hybrid vehicle with pumping loss reducing function | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4528869A | Automatic transmission for vehicles | Mechanical Engineering; Lighting; Heating | 40 | Expired |
| US4648289A | Idling control system for an automatic transmission providing anti roll back action | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US4644826A | Idling control system for an automatic transmission providing smooth starting off action | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US4349088A | Device for controlling a lock-up clutch in an automatic transmission with a lock-up clutch equipped fluid torque converter | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US4733580A | Method of controlling a transmission of a vehicle in two different modes according to requirements for power and economy | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US4702341A | Four wheel drive vehicle slippage control device and method limiting center differential action according to input torque supplied thereto | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4693081A | Control system and method for controlling output type hydraulic fluid pump of automatic transmission providing increased pump output pressure with increase in engine load | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US5052247A | Hydraulic control apparatus for belt-and-pulley type continuously variable transmission, incorporating fail-safe protective means | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4763749A | Four-wheel drive vehicle | Performing Operations; Transporting | 21 | Expired |
| US5334114A | Control system for servo hydraulic pressure in vehicular automatic transmission | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4879921A | Transaxle casing for automatic transmission | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4428259A | Fail safe automatic transmission lock up clutch control system | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4406181A | Automatic transmission control system with holddown device | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5368531A | Control method of and system thereof for inversely proportionally raising and lowering servo hydraulic pressure, based on input torque, for engaging and disengaging frictional elements in automatic transmission | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4263823A | Compact transmission for use in automobiles having means for counterbalancing internal thrusts | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4391166A | Hydraulic fluid pressure control system for an automatic transmission | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4739678A | Oil separating structure of automatic transmission | Emerging Cross-Sectional Technologies | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.