Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870942 | Diagnosis device for exhaust gas recycling device of internal combustion engine | Norio Shibata, Hideaki Mizuno, Kouichi Satoya, Nobuki Uchitani, Tatsuyoshi Kamohara +3 more | 1989-10-03 |
| 4825841 | Diagnosis device for an internal combustion engine exhaust gas recycling device | Kazuhiko Norota, Mamoru Yoshioka | 1989-05-02 |
| 4799466 | Deceleration control device of an internal combustion engine | Yoshiaki Shibata | 1989-01-24 |