Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886717 | Photochromic material, photochromic device and method for recording and erasing information | Masafumi Jinno, Ichiro Kake, Tsuyoshi Masumoto | 1989-12-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886717 | Photochromic material, photochromic device and method for recording and erasing information | Masafumi Jinno, Ichiro Kake, Tsuyoshi Masumoto | 1989-12-12 |