Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881500 | Poppet valve made of ceramics | Masato Taniguchi | 1989-11-21 |
| 4803766 | Mounting of ceramic tip on metal rocker arm | Shigeaki Akao, Masato Taniguchi | 1989-02-14 |
| 4796517 | Metal piston and ceramic piston pin assembly | Shigeaki Akao, Mitsuyoshi Kawamura | 1989-01-10 |