Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6138651 | Exhaust gas recirculation system for engine | Kouji Mori, Kodai Yoshizawa, Junichi Kawashima, Yutaka Matayoshi | 2000-10-31 |
| 5887568 | Controller and control method for engine ignition timing | Hiroshi Iwano, Yasuo Takagi, Masaaki Uchida, Hatsuo Nagaishi | 1999-03-30 |
| 5540200 | Fuel injection valve | Ken Naitoh, Akihiro Iiyama, Hiroko Hishinuma, Yasuo Takagi | 1996-07-30 |
| 4964375 | Valve operating mechanism | Yasuo Matsumoto | 1990-10-23 |