Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4973640 | Optical material composed of resin having high refractive index | Tatsuhito Matsuda, Masahiro Yoshida, Tetsuya Yamamoto, Tsuguo Takaya | 1990-11-27 |
| 4931521 | Optical materials composed of resin from thioacrylat esters | Tatsuhito Matsuda, Masahiro Yoshida, Tsuguo Takaya | 1990-06-05 |
| 4810812 | Thiolcarboxylic acid esters | Tatsuhito Matsuda, Masahiro Yoshida, Tsuguo Takaya | 1989-03-07 |