Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5376511 | Optical recording medium | Fumio Tatezono, Toshio Harada, Koutaro Matsuura | 1994-12-27 |
| 5316900 | Optical recording medium having a constant birefringent property and an alterable photochromic property | Tsuyoshi Tsujioka, Fumio Tatezono, Koutaro Matsuura | 1994-05-31 |
| 5294522 | Photochromic compound | Manabu Uchida | 1994-03-15 |