Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6991439 | Vacuum pump | — | 2006-01-31 |
| 6899529 | Connecting structure for vacuum pump | Akira Yamauchi | 2005-05-31 |
| 6840736 | Vacuum pump | Yoshinobu Ohtachi, Hirotaka Namiki, Akira Yamauchi | 2005-01-11 |