Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5798155 | Bearing material and its manufacturing method | Chuichi Yanagawa | 1998-08-25 |
| 4747603 | Oil seal comprising lip seal with thermal expansion controlled reinforcing ring | Eiichi Sugino, Yoshio Arai | 1988-05-31 |