Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4469054 | Two-stroke internal-combustion engine | Sigeru Onishi, Pan D. Jo, Satoshi Kato | 1984-09-04 |
| 4445468 | 2-Stroke internal combustion engine and an ignition-combustion method of an internal combustion engine | Sigeru Onishi | 1984-05-01 |