Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11897835 | Method for producing organic mercapto compound or intermediate thereof, (poly)thiol component, polymerizable composition for optical material, molded product, optical material, and lens | Kaoru OHSHIMIZU | 2024-02-13 |
| 11094093 | Color processing program, color processing method, color sense inspection system, output system, color vision correction image processing system, and color vision simulation image processing system | — | 2021-08-17 |
| 10429635 | Color changeable optical filter and eyeglasses including same | Hidetaka Tsukada, Shoko MATSUMURA | 2019-10-01 |
| 9096720 | Methods for producing polyaspartic acid precursor polymer and polyaspartic acid salt | Kouki Fukumura, Keiichi Fukuda | 2015-08-04 |
| 8434866 | Polymerizable composition for optical material, optical material, and method for preparing the optical material | Hidetoshi Hayashi, Masaru Kawaguchi, Akinori Ryu, Mamoru Takashina, Seiichi Kobayashi +1 more | 2013-05-07 |
| 8426551 | Metal thietane compound, polymerizable composition containing the compound, resin and use of the resin | Masakazu Murakami, Tomoyuki Ando, Hidetoshi Hayashi, Osamu Kohgo, Seiichi Kobayashi | 2013-04-23 |
| 8362280 | Thietane compound, polymerizable composition containing the same, resin, method for producing the resin, and use of the polymerizable composition and the resin | Hidetoshi Hayashi, Osamu Kohgo, Seiichi Kobayashi | 2013-01-29 |
| 8293864 | Metal thietane compound, polymerizable composition containing the compound, resin and use of the resin | Masakazu Murakami, Tomoyuki Ando, Hidetoshi Hayashi, Osamu Kohgo, Seiichi Kobayashi | 2012-10-23 |