Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845021 | Method for recording optical information in optical high density recording mediums | Jinsei Miyazaki, Kimiaki Yoshino, Kazuhisa Morimoto | 1989-07-04 |
| 4845240 | Optical recording medium and process for producing the same | Junichi Hibino | 1989-07-04 |
| 4803287 | Certain photochromic fulgide compounds and method for their synthesis | Junichi Hibino | 1989-02-07 |