Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889098 | Air-fuel ratio detecting apparatus for an internal combustion engine equipped with a heater controller | Hiroyoshi Suzuki, Ryoji Nishiyama | 1989-12-26 |
| 4886028 | Apparatus for controlling air-fuel ratio of internal combustion engine | Masanobu Uchinami, Toshihisa Takahashi, Hiroyoshi Suzuki, Ryoji Nishiyama | 1989-12-12 |