Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671942 | Method for manufacturing a gas sensor | Yukio Ohba | 2004-01-06 |
| 4442820 | Exhaust recirculation system for internal combustion engines | Toshikazu Ina, Hisasi Kawai, Tokio Kohama, Yasuhiko Ishida, Souichi Matsusita | 1984-04-17 |
| 4322799 | Exhaust gas recirculation valve control system and method | Tokio Kohama, Takeshi Matsui, Hisasi Kawai, Toshikazu Ina, Hidetaka Nohira +1 more | 1982-03-30 |
| 4257382 | Electronic control system for internal combustion engines | Takeshi Matsui, Tokio Kohama, Hisasi Kawai, Toshikazu Ina, Hidetaka Nohira +1 more | 1981-03-24 |
| 4250855 | Electronic control system for carburetor | Tokio Kohama, Takeshi Matsui, Kiyoshi Kobashi, Hisasi Kawai, Toshikazu Ina +1 more | 1981-02-17 |
| 4248187 | Electronic control system for internal combustion engines | Takeshi Matsui, Tokio Kohama, Hisasi Kawai, Toshikazu Ina, Hidetaka Nohira +1 more | 1981-02-03 |
| 4242997 | Exhaust gas recirculation system for internal combustion engines | Tokio Kohama, Takeshi Matsui, Tokuta Inoue, Kiyohiko Oishi, Kiyoshi Kobashi | 1981-01-06 |
| 4226222 | Exhaust gas recirculation system for internal combustion engines | Tokio Kohama, Takeshi Matsui, Hisasi Kawai, Toshikazu Ina, Hidetaka Nohira +1 more | 1980-10-07 |
| 4203296 | Supercharged internal combustion engine | Eizi Tanaka, Michiniro Ohashi | 1980-05-20 |
| 4183216 | Supercharged internal combustion engine | Eizi Tanaka, Michihiro Ohashi | 1980-01-15 |