Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871236 | Organic thin film display element | Akira Miura, Koichi Mizushima, Makoto Azuma, Yasushi Mori | 1989-10-03 |
| 4819210 | Optical information writing method | Akira Miura, Koichi Mizushima, Makoto Azuma, Takano Iwakiri | 1989-04-04 |