Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12139573 | Polymerizable composition for optical members, optical member and eyeglass lens | Masahisa Kousaka, Tomofumi Ohnishi, Yoshio Sano | 2024-11-12 |
| 11834549 | Method for producing polymerizable composition | Masahide Yamada | 2023-12-05 |
| 11760831 | Polymerizable composition for optical member | — | 2023-09-19 |
| 10975026 | Method for producing polythiol compound, method for producing curable composition, and method for producing cured product | Masahisa Kousaka, Akinori Yamamoto | 2021-04-13 |
| 10766996 | Method for producing polythiol compound, method for producing curable composition, and method for producing cured product | Masahisa Kousaka, Tomofumi Ohnishi | 2020-09-08 |
| 10752726 | Resin composition | Masahisa Kousaka, Tomofumi Ohnishi | 2020-08-25 |
| 10611726 | Method for producing polythiol compound, method for producing curable composition, and method for producing cured product | Masahisa Kousaka, Tomofumi Ohnishi | 2020-04-07 |
| 6274694 | Process for the production of polyurethane lens | Masahisa Kosaka | 2001-08-14 |
| 6187888 | Cast molding material for plastic lens and process for the production of plastic lens | Akiko Shimizu, Shigeo Nakamura | 2001-02-13 |
| 6056900 | Cast molding material for plastic lens and process for the production of plastic lens | Akiko Shimizu, Shigeo Nakamura | 2000-05-02 |
| 5744568 | Process for the production of polyurethane lens | Masahisa Kosaka | 1998-04-28 |
| 5635580 | Process for the production of polyurethane lens | Masahisa Kosaka | 1997-06-03 |