Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855992 | Reversible optical recording medium with an optothermally deformable recording layer | Sumio Ikegawa, Shuichi Komatsu, Shinji Arai, Nobuaki Yasuda | 1989-08-08 |
| 4845000 | Radiation sensitive carrier body utilized as stamper structure | Yoshikatsu Takeoka, Nobuaki Yasuda, Norio Ozawa | 1989-07-04 |