Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6367448 | Engine control | Fumitoshi Sugiyama, Sadao Nogi | 2002-04-09 |
| 5806484 | Induction control system for engine | Masato Nishigaki | 1998-09-15 |
| 5651344 | Induction and injection system for multi-valve engine | Masato Nishigaki, Humitoshi Sugiyama | 1997-07-29 |