Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618590 | Process for manufacturing a piston ring | Yoshio Naruse | 1997-04-08 |
| 5582414 | Sliding member and method for manufacturing the same | Nobuyuki Yamashita, Shoji Tanaka, Hiroto Fukutome, Hiroshi Tamagaki | 1996-12-10 |
| 5469616 | Method of manufacturing a side rail of a combined oil ring | Akira Harayama, Nobuyuki Kazama, Masao Ishida | 1995-11-28 |
| 5449547 | Hard coating material, sliding member coated with hard coating material and method for manufacturing sliding member | Nobuyuki Yamashita, Shoji Tanaka, Hiroto Fukutome, Hiroshi Tamagaki | 1995-09-12 |