Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699342 | Method of and device for recording and playing back an optical disk having a test playback region utilizing pits of minimum size for controlling the power of the laser | Kosuke Yagi, Masato Nagasawa | 1997-12-16 |