Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882695 | Control system for ignition timing and boost pressure in internal combustion engine | Toshiyuki Mieno, Toyohei Nakajima | 1989-11-21 |
| 4856480 | Apparatus for controlling ignition timing in internal combustion | Toyohei Nakajima, Toshiyuki Mieno, Akira Tanaka, Yukihiko Suzaki | 1989-08-15 |
| 4841935 | Variable air induction control system for internal combustion engine | Hideji Yamada, Toyohei Nakajima, Yukihiko Suzaki, Masao Jogen, Akira Tanaka | 1989-06-27 |
| 4796586 | Method of and apparatus for controlling ignition timing in internal combustion engine | Akira Tanaka, Yukihiko Suzaki, Hideji Yamada, Toyohei Nakajima, Toshiyuki Mieno | 1989-01-10 |