Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5093817 | Method and apparatus for recording information on an opto-magnetic recording medium by applying a modulated light beam while applying a magnetic field alternating with a constant period | Eiichi Fujii, Masaharu Tsukada, Takayuki Aizawa, Yasuyuki Tamura, Norio Hashimoto | 1992-03-03 |
| 5039202 | Optical system driving apparatus | Osamu Koyama, Hideo Nakajima, Yasuo Nakamura | 1991-08-13 |