Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6332925 | Evacuation system | Nobuharu Noji, Hiroaki Ogamino, Hiroshi Hattori, Norihiko Nomura, Tetsuro Sugiura +1 more | 2001-12-25 |
| 6251192 | Vacuum exhaust system | Takeshi Kawamura | 2001-06-26 |
| 5746790 | Trap for collecting solid | Tetsuma Ikegami, Naoya Hanafusa, Masaru Nakaniwa | 1998-05-05 |
| 5312192 | Bearing lubricating structure for rotary machinery | Noburu Shimuzu | 1994-05-17 |
| 5173041 | Multistage vacuum pump with interstage solid material collector and cooling coils | Harumitsu Saito | 1992-12-22 |