Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6276691 | Oil seal | Akira Yamaguchi | 2001-08-21 |
| 5595697 | Method of manufacturing a sealing device | Noriyuki Wada | 1997-01-21 |
| 5183271 | Sealing device and manufacturing method of the same | Noriyuki Wada | 1993-02-02 |