Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5466853 | Diester monomer, its polymer, water-containing soft contact lens, and processing solution for contact lens | Yasumi Koinuma, Takeo Matsumoto, Nobuo Nakabayashi, Kazuhiko Ishihara | 1995-11-14 |
| 5461433 | Highly hydrous soft contact lens and a treating solution for contact lenses | Nobuo Nakabayashi, Kazuhiko Ishihara, Yoshishige Murata, Takeo Matsumoto, Yasumi Koinuma | 1995-10-24 |