Osamu Hirako
18Patents
11h-index
39Co-inventors
68Inventor score
Filing activity: Apr 1, 1987 → May 8, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5657625A | Apparatus and method for internal combustion engine control | Emerging Cross-Sectional Technologies | 175 | Expired |
| US5349816A | Exhaust emission control system | Emerging Cross-Sectional Technologies | 71 | Expired |
| US5088043A | Engine controlling system for vehicle | Performing Operations; Transporting | 37 | Expired |
| US5096015A | Engine controlling system for vehicle | Performing Operations; Transporting | 32 | Expired |
| US5740777A | In-cylinder injection internal combustion engine | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4813408A | Engine cooling device | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US5687692A | Combustion state determination method of internal combustion engine, as well as combustion state control method and combustion state control system for internal combustion engine | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5417190A | Stratified burning internal combustion engine | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5128869A | Engine controlling system for vehicle | Performing Operations; Transporting | 16 | Expired |
| US4908765A | Air/fuel ratio controller for engine | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5245964A | Intake port structure for internal combustion engine | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5295464A | Stratified burning internal combustion engine | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4850317A | Intake port device | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5423300A | Internal combustion engine | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4765294A | Intake device for internal combustion engine | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5366610A | Air fuel ratio detecting device | Physics | 3 | Expired |
| US4891121A | Air fuel ratio detecting device | Physics | 2 | Expired |
| US4955327A | Partial-boil cooling apparatus for engine | Mechanical Engineering; Lighting; Heating | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.