Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11248077 | Polymerizable composition for optical material and molded product | Nobuo Kawato, Masaru Kawaguchi | 2022-02-15 |
| 9335566 | Photochromic lens for eye glasses | — | 2016-05-10 |
| 9120278 | Method for producing progressive power eyeglass lens | Yuji Hoshi, Ken Watanabe | 2015-09-01 |
| 7842203 | Gasket for molding plastic lens | Toshihisa Kawakami | 2010-11-30 |
| 7718097 | Process for producing a plastic lens | — | 2010-05-18 |
| 6913357 | Plastic photochromic lenses for glasses and process for their production | — | 2005-07-05 |