Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5997180 | Circumferential flow type dynamic pressure bearing | Akiyoshi Takahashi, Nakazo Ariyama, Hiroki Matsushita, Takeshi Hijiya | 1999-12-07 |
| 5746515 | Dynamic-pressure gas bearing | Akiyoshi Takahashi, Nakazo Ariyama, Isao Ohkawa, Hiroki Matsushita | 1998-05-05 |
| 4843942 | Guitar pick | — | 1989-07-04 |
| 4443107 | Optical displacement sensor | David H. Alexander, Robert N. Sato | 1984-04-17 |