Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832584 | Valve system for internal combustion engine | Toshihiko Oka | 2004-12-21 |
| 6820585 | Lubricating oil guide device for engine | Takashi Maeda | 2004-11-23 |
| 6810846 | Flow path structure of hollow tube | Toshihiko Oka | 2004-11-02 |
| 6763793 | Valve system for internal combustion engine | Toshihiko Oka | 2004-07-20 |