Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333429 | Internal combustion engine | Tsugio Sanka, Kenji Naito | 1982-06-08 |
| 4294205 | Internal combustion engine | Tsugio Sanka, Kenji Naito | 1981-10-13 |
| 4200596 | Throttle valve apparatus in an internal combustion engine and its method of operation | Kazunori Itaya | 1980-04-29 |