Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6823897 | Four-way switching valve | Hisatoshi Hirota, Toshiyuki Shiota | 2004-11-30 |
| 6810911 | Four-way switching valve | Hisatoshi Hirota | 2004-11-02 |
| 6783110 | Proportional solenoid valve | Hisatoshi Hirota, Tokumi Tsugawa, Toshiyuki Shiota, Yuusuke Inoue | 2004-08-31 |