Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6547443 | Tapered roller bearing | Takashi Tsujimoto, Tsukasa Yamakawa, Yasuhiro Shimizu, Shiro Ishikawa | 2003-04-15 |
| 5752775 | Roller bearing | Akira Tsutsui, Yasuhiro Shimizu | 1998-05-19 |