Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815192 | Method of securing an elongated vibration amplifier member to an annular vibrating reed | Toshifumi Usui, Hisanobu Kanamaru, Kazuhiro Tsuruoka | 1989-03-28 |
| 4549399 | Exhaust emission control system for diesel engine | Toshifumi Usui | 1985-10-29 |
| 4506506 | Exhaust emission control device for diesel engine | Toshifumi Usui | 1985-03-26 |
| 4430099 | Vaporized fuel adsorbing canister | Yuichi Tobita | 1984-02-07 |
| 4350136 | Exhaust gas recirculation valve | — | 1982-09-21 |
| 4231337 | Air intake system for diesel engine | Akiyasu Kuwahara | 1980-11-04 |
| 4191870 | Pressure responsive switch having protection from overpressure of source | Shigewo Ishikawa | 1980-03-04 |