Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5361243 | Optical disk apparatus having laminated diaphragm springs structure | — | 1994-11-01 |
| 5345432 | Optical head | Hideo Yamasaki, Takashi Yoshizawa, Sou Ishika | 1994-09-06 |
| 5337865 | Viscoelastic substance and objective lens driving apparatus with the same | Akira Yamada, Takashi Yoshizawa, Katsutoshi Wada, Hideo Yamasaki | 1994-08-16 |
| 5285462 | Laser beam emitting device | — | 1994-02-08 |