Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889082 | Intake system for multiple-cylinder engine | Yasuhiro Yuzuriha, Toshihiko Hattori, Akinori Yamashita | 1989-12-26 |
| 4875455 | Automobile exhaust gas recirculating system | Noboru Hashimoto, Koji Onishi, Yoshikuni Yada, Hidetoshi Nobumoto, Makoto Hotate | 1989-10-24 |
| 4846117 | Intake system for multiple-cylinder engine | Akinori Yamashita, Toshihiko Hattori, Yasuhiro Yuzuriha | 1989-07-11 |
| 4829941 | Intake system for multiple-cylinder engine | Katsumi Okazaki, Junso Sasaki, Yasuhiro Yuzuriha | 1989-05-16 |
| 4813232 | Exhaust device for internal combustion engine | Fumio Hinatase, Kazuaki Umezono | 1989-03-21 |