Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4553514 | Internal combustion engine | Kenichi Aoyagi, Hiroshi Yokoyama | 1985-11-19 |
| 4530325 | Suction system for internal combustion engine | Kenichi Aoyagi | 1985-07-23 |
| 4483292 | Internal combustion engine | Kenichi Aoyagi | 1984-11-20 |
| 4479469 | Internal combustion engine | Kenichi Aoyagi, Hiroshi Yokoyama | 1984-10-30 |
| 4467760 | Internal combustion engine | Kenichi Aoyagi | 1984-08-28 |
| 4450803 | Internal combustion engine | Kenichi Aoyagi, Hiroshi Yokoyama | 1984-05-29 |
| 4438743 | Internal combustion engine | Kenichi Aoyagi | 1984-03-27 |
| 4438742 | Internal combustion engine | Kenichi Aoyagi | 1984-03-27 |