Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6792897 | Soundproofed engine generator | Shinichi Okazaki | 2004-09-21 |
| 6725850 | Gas-liquid separation device in a vibrator engine | Ryoji Kurasawa, Shigeatsu Hongo, Satoshi Ishida | 2004-04-27 |