Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6424608 | Optical apparatus used for optical disk recording and reproducing apparatus | — | 2002-07-23 |
| 5177718 | Optical disk apparatus | — | 1993-01-05 |
| 5161144 | System for recording information on an optical recording medium | Tomohisa Yoshimaru, Akihiko Doi | 1992-11-03 |
| 5101396 | Information recording system capable of preventing overwriting | Akihiko Doi | 1992-03-31 |
| 5010541 | Apparatus having a movable portion and a fixed portion for reproducing data from an optical disk by a light beam | — | 1991-04-23 |
| 4992758 | Power amplifying apparatus for optical disk apparatus | — | 1991-02-12 |
| 4912717 | Apparatus for controlling the amount of laser light and laser light monitoring method | — | 1990-03-27 |