Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4226222 | Exhaust gas recirculation system for internal combustion engines | Tokio Kohama, Takeshi Matsui, Hisasi Kawai, Akira Nishimatsu, Toshikazu Ina +1 more | 1980-10-07 |
| 4191144 | Method for controlling ignition timing in an internal combustion engine | Hidetaka Nohira, Jiro Nakano | 1980-03-04 |