Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856480 | Apparatus for controlling ignition timing in internal combustion | Toyohei Nakajima, Toshiyuki Mieno, Akira Tanaka, Akira Nagao | 1989-08-15 |
| 4841935 | Variable air induction control system for internal combustion engine | Hideji Yamada, Akira Nagao, Toyohei Nakajima, Masao Jogen, Akira Tanaka | 1989-06-27 |
| 4796586 | Method of and apparatus for controlling ignition timing in internal combustion engine | Akira Tanaka, Akira Nagao, Hideji Yamada, Toyohei Nakajima, Toshiyuki Mieno | 1989-01-10 |
| 4797828 | Electronic control system for internal combustion engines | Yoshio Suzuki | 1989-01-10 |