Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4512449 | Front cover for a torque converter and method of processing the same | Yasuhisa Kamiya, Seiichi Nishikawa | 1985-04-23 |
| 4470535 | Method of processing a front cover for a torque converter | Seiichi Nishikawa | 1984-09-11 |
| 4469206 | Hydraulically-operated frictional engagement device | Kazuaki Watanabe, Seiichi Nishikawa | 1984-09-04 |