Issued Patents All Time
Showing 76–79 of 79 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4982389 | Magneto-optical recorder with compensation for variation in applied magnetic field intensity on a recording medium | Masahiro Ojima | 1991-01-01 |
| 4901325 | Semiconductor laser device | Takeshi Kato, Kenichi Mizuishi, Katuaki Chiba, Masahiro Ojima, Shigeru Nakamura +1 more | 1990-02-13 |
| 4803674 | Magneto-optical recorder with small-sized, low-powered electromagnetic coil | Yutaka Akiba | 1989-02-07 |
| 4622564 | Optical information recording apparatus | Toshimitsu Kaku, Yoshito Tsunoda | 1986-11-11 |