Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889648 | Cold-rolling oils for steel plates | Yuzo Higaki, Keiichi Tanikawa | 1989-12-26 |
| 4886612 | Lubricating oil | Yuzo Higaki, Keiichi Tanikawa | 1989-12-12 |
| 4858568 | Intake apparatus for internal combustion engine | Hideki Obayashi, Yoshitaka Nishio, Tokio Kohama | 1989-08-22 |
| 4796584 | Intake control system for internal combustion engine and intake control valve used therein | Tokio Kohama, Yoshitaka Nishio, Hideki Obayashi, Kazuyuki Horie | 1989-01-10 |