Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5997180 | Circumferential flow type dynamic pressure bearing | Kachu Ishizuka, Akiyoshi Takahashi, Hiroki Matsushita, Takeshi Hijiya | 1999-12-07 |
| 5746515 | Dynamic-pressure gas bearing | Akiyoshi Takahashi, Isao Ohkawa, Hiroki Matsushita, Kachu Ishizuka | 1998-05-05 |