Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594090 | Alkylene sulfide group-containing prepolymer, polymerizable composition and optical material | Hiromitsu Nakajima, Shuji Ichikawa, Yasumi Koinuma, Kazuo Matsuyama, Koji Kamenosono +1 more | 1997-01-14 |