Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33027 | Engine idling speed controlling system | Yoshiaki Danno, Akira Takahashi, Kazumasa Iida, Yasukuki Okamoto, Kenzo Nakao | 1989-08-22 |
| 4848301 | Fuel feed quantity control system for internal combustion engine | Akira Takahashi, Mamoru Sugiura, Hiroshi Takamatsu, Takeshi Jinbo, Yasuhiko Saito +1 more | 1989-07-18 |
| 4834054 | Method of detecting a fault of an exhaust gas recirculation system | Akira Takahashi, Takeshi Imaizumi, Susumu Saito, Hiroshi Tanaka, Takeshi Jimbo | 1989-05-30 |