Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4446839 | Method and apparatus for controlling exhaust gas recirculation in a diesel engine | Toshihiko Igashira, Takeshi Tanaka, Hisasi Kawai, Mitsumasa Yamada, Michio Kawagoe +1 more | 1984-05-08 |
| 4445488 | Exhaust gas recirculation control for diesel engine | Takeshi Tanaka, Hisasi Kawai, Toshihiko Igashira, Mitsumasa Yamada, Michio Kawagoe +1 more | 1984-05-01 |
| 4411242 | Method and apparatus for controlling EGR in internal combustion engine | Toshihiko Igashira, Takeshi Tanaka, Hiromichi Yanagihara | 1983-10-25 |