Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7779807 | Intake/exhaust valve and its seal for internal combustion engine | Hisato Tanaka, Tsuneo Endoh, Hiroaki Hara | 2010-08-24 |
| 7722320 | Flow-guiding member unit and its production method | Keizo Matsumoto | 2010-05-25 |
| 7645120 | Flow-guiding member unit and its production method | Keizo Matsumoto | 2010-01-12 |
| 6821087 | Flow-rectifying member and its unit and method for producing flow-rectifying member | Keizo Matsumoto, Hiroichi Fukuda | 2004-11-23 |