Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4962013 | Photochromic material containing a spirooxazine and a nitroxy free radical triplet state quencher | Masashi Ito, Shuichi Maeda, Kazuo Mitsuhashi, Tetsuo Murayama | 1990-10-09 |
| 4708908 | Plastic parts with surface-hardening coating containing ultraviolet absorber | Ryuzo Uemura, Takatoshi Sagawa | 1987-11-24 |