Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7999989 | Photochromic film, photochromic lens comprising the same, and method of manufacturing photochromic lens | Osamu Asai, Hiroshi Ohta | 2011-08-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7999989 | Photochromic film, photochromic lens comprising the same, and method of manufacturing photochromic lens | Osamu Asai, Hiroshi Ohta | 2011-08-16 |