Hisasi Kawai
126Patents
22h-index
79Co-inventors
89Inventor score
Filing activity: Mar 31, 1975 → Apr 28, 1988
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4489695A | Method and system for output control of internal combustion engine | Mechanical Engineering; Lighting; Heating | 172 | Expired |
| US4434767A | Output control system for multicylinder internal combustion engine | Mechanical Engineering; Lighting; Heating | 165 | Expired |
| US4809197A | Road surface detecting device | Performing Operations; Transporting | 47 | Expired |
| US4739183A | Local area network for vehicle | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4356551A | Knock detecting method | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4777611A | Apparatus for detecting abnormal variations of wheels of vehicle | Performing Operations; Transporting | 39 | Expired |
| US4465050A | Device for atomizing the fuel for an internal-combustion engine | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4089214A | Intake air amount detecting system | Physics | 34 | Expired |
| US4268910A | Method for controlling timing of spark ignition for an internal combustion engine by feedback related to the detection of knocking | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4400944A | Air-fuel ratio control method and apparatus for internal combustion engines | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4537172A | Fuel supply control apparatus for an internal-combustion engine | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4399697A | Gas flow measuring apparatus | Physics | 28 | Expired |
| US4546338A | Rotary driving apparatus | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4562818A | Method and apparatus for controlling the air-fuel ratio in an internal combustion engine | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4535735A | Multi-gap spark ignition system | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4522177A | Temperature compensated fuel injection system for internal combustion engines | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4345228A | Rotary actuator | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4739483A | Automatic transmission control system for an automobile | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4644212A | Power supply for piezoelectric-element driving device | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4570594A | Method for controlling internal combustion engine | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4201159A | Electronic control method and apparatus for combustion engines | Emerging Cross-Sectional Technologies | 22 | Expired |
| US3991727A | Electronically controlled fuel injection system | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4304129A | Gas flow measuring apparatus | Physics | 21 | Expired |
| US4691286A | Method and apparatus for detecting combustion variations in internal combustion engine | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4478185A | Air-fuel ratio and ignition timing regulation by detecting engine running condition | Emerging Cross-Sectional Technologies | 19 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.