Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11886048 | Lens and eyewear | Tsuyoshi Kamibeppu, Hirofumi Asada, Akifumi Aono, Akihiro Muramatsu | 2024-01-30 |
| 11314119 | Lens, lens blank, and eyewear | Yoshinobu Okada, Eiichiro HIKOSAKA, Akifumi Aono, Akihiro Muramatsu | 2022-04-26 |
| 11249327 | Lens and eyewear | Tsuyoshi Kamibeppu, Hirofumi Asada, Akifumi Aono, Akihiro Muramatsu | 2022-02-15 |
| 10859865 | Lens, lens blank, and eyewear | Yoshinobu Okada, Eiichiro HIKOSAKA, Akifumi Aono, Akihiro Muramatsu | 2020-12-08 |
| 7972065 | Hydrodynamic bearing device, spindle motor, and recording and reproducing apparatus equipped with same | Nobuhiko Sato | 2011-07-05 |
| 7854552 | Hydrodynamic bearing device, spindle motor equipped with same, and recording and reproducing apparatus | Nobuhiko Sato | 2010-12-21 |
| 7812489 | Motor | Nobuhiko Sato | 2010-10-12 |
| 6698931 | Dynamic pressure-type liquid bearing unit | — | 2004-03-02 |