Issued Patents 1994
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374668 | Casting epoxy resin, polythiol and releasing agent to form lens | Yoshinobu Kanemura, Masao Imai | 1994-12-20 |
| 5352758 | Mercapto compound, its preparation process, and sulfur-containing urethane resins and lenses using the same | Yoshinobu Kanemura, Seiichi Kobayashi | 1994-10-04 |
| 5336749 | Alicyclic diamines, alicyclic diisocyanates and polyisocyanato-isocyanurates and method for the preparation thereof | Ryuji Haseyama, Masatoshi Takagi, Kouzou Hayashi, Kazuyuki Kuroda, Taisaku Kano +1 more | 1994-08-09 |
| 5306799 | High refractive index plastic lens and composition therefor | Seiichi Kobayashi, Yoshinobu Kanemura | 1994-04-26 |
| 5283312 | Mercapto compound, its preparation process, and sulfur-containing urethane resins and lenses using the same | Yoshinobu Kanemura, Seiichi Kobayashi | 1994-02-01 |