Hiroaki Koga
14Patents
6h-index
16Co-inventors
63Inventor score
Filing activity: Jan 11, 1989 → Mar 8, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5526777A | Air inlet apparatus for internal combustion engine | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6391073B1 | Air cleaner | Performing Operations; Transporting | 19 | Expired |
| US5727506A | Two-stroke internal combustion engine | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4936271A | Portable powered working machine | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4979306A | Power working machine | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US5029561A | Chain saw | Performing Operations; Transporting | 6 | Expired |
| US6994070B2 | Portable air blowing working machine | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| USD325155S | Power chainsaw motor housing | General | 3 | Expired |
| US5544630A | Alarm which may be used at the time of starting of engine for working machine | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US5014835A | Power work-machine | Performing Operations; Transporting | 2 | Expired |
| US4888034A | Choke device for internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Expired |
| US9286880B2 | Masking sound outputting device and masking sound outputting method | Electricity | 1 | Active |
| US11667156B2 | Tire | Performing Operations; Transporting | 0 | Active |
| US12319094B2 | Tire | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.