Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5661711 | Optical recording and reproducing apparatus | Masahiko Tanaka | 1997-08-26 |
| 5602825 | Optical disk and optical disk apparatus | Yoshinori Honguh | 1997-02-11 |
| 5592464 | Optical disk and optical disk apparatus | Yoshinori Honguh | 1997-01-07 |