Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813408 | Engine cooling device | Takehiko Katsumoto, Yoshiaki Danno, Daisuke Sanbayashi, Takashi Dogahara, Hidetsugu Kanao +8 more | 1989-03-21 |
| 4646689 | Engine intake passage length varying device | Takehiko Katsumoto, Seiichi Oota | 1987-03-03 |