Issued Patents 1989
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867126 | System for suppressing discharge of evaporated fuel gas for internal combustion engine | Masao Yonekawa | 1989-09-19 |
| 4866620 | Control system and method for an internal combustion engine, obtaining air pressure after bottom dead center | Tomoaki Abe, Masahi Kiyono | 1989-09-12 |
| 4854283 | Throttle valve control apparatus | Masashi Kiyono, Kanji Takeuchi, Tomoaki Abe | 1989-08-08 |
| 4850325 | Fault detection system for internal combustion engine control apparatus | Tomoaki Abe, Masashi Kiyono | 1989-07-25 |
| 4838226 | Apparatus for controlling intake air flow rate in internal combustion engine | Toshio Matsuzawa, Kazuji Minagawa, Akira Muramatsu, Tomoaki Abe, Masashi Kiyono +2 more | 1989-06-13 |
| 4817576 | Vaporized fuel control apparatus for internal combustion engines | Tomoaki Abe, Masashi Kiyono | 1989-04-04 |
| 4805576 | Fault detection system for internal combustion engine control apparatus | Tomoaki Abe, Masashi Kiyono | 1989-02-21 |
| 4796591 | Internal combustion engine control system | Masashi Kiyono, Tomoaki Abe | 1989-01-10 |