Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10429635 | Color changeable optical filter and eyeglasses including same | Hironori Kuboi, Shoko MATSUMURA | 2019-10-01 |
| 10266636 | Process for producing episulfide compound for optical material, episulfide-containing composition, and polymerizable composition for optical material including the same composition | Masaru Kawaguchi | 2019-04-23 |