Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5894824 | Piston for internal combustion engines | Hiroaki Watanabe, Shingo Motoda, Hideyuki Miyasaka | 1999-04-20 |
| 5404792 | Piston for internal combustion engine | Hiroaki Watanabe, Hideo Yoshimura | 1995-04-11 |