Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648952 | Phase-change optical disc recording method and apparatus, and information recording apparatus and recording pre-compensation method | Ikuo Aoki | 1997-07-15 |
| 5602823 | Optical recording medium having pre-formatted patterns arrange by shifting phases | Ikuo Aoki, Yoshitaka Takahashi | 1997-02-11 |