Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6666615 | Spacer and parts attachment device | Satoshi Mukouyama, Masayuki Hirai, Jun Zhang, Minoru Araki | 2003-12-23 |
| 4289220 | Hydraulic coupling with a lock-up clutch | Hajime Arai | 1981-09-15 |
| 4207757 | Double cardan universal joint | — | 1980-06-17 |