Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870942 | Diagnosis device for exhaust gas recycling device of internal combustion engine | Norio Shibata, Hideaki Mizuno, Kouichi Satoya, Tatsuyoshi Kamohara, Kenichi Harada +3 more | 1989-10-03 |
| 4819601 | Diagnostic system of an air-fuel ratio control device | Kenichi Harada, Tatuyoshi Kamohara, Koichi Satoya, Takashi Kato | 1989-04-11 |
| 4770146 | Apparatus and a method for diagnosing an exhaust gas purification system | Norio Shibata | 1988-09-13 |
| 4527519 | Method and system for controlling intake flow between direct and helical intake passages of intake port of internal combustion engine | Hidemi Oonaka | 1985-07-09 |
| 4450809 | Ignition timing control system for an internal-combustion engine | Hidemi Onaka | 1984-05-29 |