Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6085733 | Ignition control system for engine | Yu Motoyama, Miyoshi Ishibashi, Yoshihiko Moriya | 2000-07-11 |
| 5826557 | Operation control system for direct injection 2 cycle engine | Yu Motoyama | 1998-10-27 |