Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6296951 | Laminated chromium plating layers having superior wear resistance and fatigue strength | Motonobu Onoda, Katsuaki Ogawa, Kazuo Shimizu | 2001-10-02 |
| 5193820 | Three-piece type oil ring assembly | Takeji Tsuchiya, Akira Takahashi, Katsushi Ishihara | 1993-03-16 |