Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886022 | Engine valve driving apparatus | — | 1989-12-12 |
| 4854273 | Oil pressure control apparatus for an internal combustion engine | Tatsuya Uesugi | 1989-08-08 |
| 4849132 | Surfactant composition having improved functions | Satoshi Fujita, Akira Noike | 1989-07-18 |