Issued Patents 2019
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10429635 | Color changeable optical filter and eyeglasses including same | Hidetaka Tsukada, Shoko MATSUMURA | 2019-10-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10429635 | Color changeable optical filter and eyeglasses including same | Hidetaka Tsukada, Shoko MATSUMURA | 2019-10-01 |