Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866687 | Optical disc access method and optical disk storage using coarse and fine actuators | Masuo Kasai, Takeshi Maeda, Kazuo Shigematsu, Toshimitsu Kaku | 1989-09-12 |
| 4853915 | Optical recording/reproducing method and apparatus for optical disk medium having unique control parameters | Shinichi Arai | 1989-08-01 |