Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868821 | Optical pickup which includes a single objective lens having magnification equal to or greater than 3 and equal to or smaller than 5 | Toshiki Matsuno, Hiroyuki Nakamura, Hiroshi Yasuda | 1989-09-19 |
| 4842392 | Objective lens driving unit | Hiroyuki Nakamura, Toshiki Itoi, Akifumi Hashimoto | 1989-06-27 |
| 4805770 | Cassette with tray ejection means | Hermann Grobecker, Gilbert E. Mestdagh | 1989-02-21 |