Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594090 | Alkylene sulfide group-containing prepolymer, polymerizable composition and optical material | Tsuyoshi Miyazaki, Shuji Ichikawa, Yasumi Koinuma, Kazuo Matsuyama, Koji Kamenosono +1 more | 1997-01-14 |