Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887568 | Ceramic insert for defining precombustion chamber in cylinder head | Masato Taniguchi | 1989-12-19 |
| 4881498 | Rocker arm made of ceramics | Yoshinori Narita | 1989-11-21 |
| 4796576 | Adjustment mechanism for ceramic rocker arm | Noboru Ishida, Mitsuyoshi Kawamura | 1989-01-10 |