Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858212 | Recording method on magnetooptical disc with laser magnetic field | Akira Takahashi, Michinobu Mieda, Tomoyuki Miyake, Kenji Ohta | 1989-08-15 |
| 4818648 | Optical memory element | Kenji Ohta, Akira Takahashi, Tetsuya Inui, Hiroyuki Katayama, Junji Hirokane | 1989-04-04 |