Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6759104 | Photocurable composition, cured product and process for producing the same | Akihiko Sakai, Akira Esaki, Yutaka Tamura | 2004-07-06 |
| 5801884 | Optical device and process for producing the same | Heihachi Sato, Iwao Seo | 1998-09-01 |
| 5191061 | Resin for high-refraction lens containing a sulfur-containing aromatic(meth)acrylate and a mercapto compound | Yukihito Zanka, Tsutomu Isaka, Fumie Watari | 1993-03-02 |
| 4990653 | Sulfur-containing acryl oligomer composition | Shoji Ichihara | 1991-02-05 |