Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637371 | Phase change optical recording medium and activation energy determining method | Junji Tominaga, Ryo Inaba | 1997-06-10 |
| 5627012 | Method for preparing phase change optical recording medium | Junji Tominaga, Ryo Inaba | 1997-05-06 |