Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4532904 | Air-fuel ratio control device for internal combustion engines | Tadao Osawa, Toru Nakagawa, Takashige Kohno, Tokihiko Sakuma | 1985-08-06 |
| 4314585 | Proportional type electromagnetic valve | Torazo Nishimiya, Seisaku Numakura | 1982-02-09 |
| 4279233 | Device for trapping fuel vapor vaporized in fuel feed system of internal combustion engine | Yuichi Tobita | 1981-07-21 |
| 4278959 | Current-stroke proportional type solenoid valve | Torazo Nishimiya | 1981-07-14 |
| 4231340 | Exhaust gas recirculation control system for internal combustion engine | Torazo Nishimiya, Tomo Ito, Seisaku Numakura | 1980-11-04 |