Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4995350 | 2-cycle uni-flow spark-ignition engine | Seiichiro Kumagai, Michikata Kono, Hisashi Inaga | 1991-02-26 |
| 4977875 | Two-stroke-cycle uniflow spark-ignition engine | Seiichiro Kumagai, Michikata Kono, Hisashi Inaga | 1990-12-18 |
| 4922865 | Two-stroke-cycle uniflow spark-ignition engine | Seiichiro Kumagai, Michikata Kono, Hisashi Inaga | 1990-05-08 |