Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7882818 | Cylinder liner and engine | Toshihiro Takami, Kouhei Hori, Takeshi Tsukahara, Noritaka Miyamoto, Masaki Hirano +7 more | 2011-02-08 |
| 5651553 | Antirotation structure for combined oil ring | Masao Ishida | 1997-07-29 |
| 5618590 | Process for manufacturing a piston ring | Satomichi Miyazaki | 1997-04-08 |
| 5316321 | Nonferrous piston ring with hard surface treatment layer | Masao Ishida | 1994-05-31 |
| 5154433 | Piston ring | — | 1992-10-13 |