Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11754860 | Photochromic lens with laminated film, method for producing a photochromic lens, and a spectacle frame | Liu Ouyang, Stephen Brown, Yong Tian | 2023-09-12 |
| 11067834 | High refractive index polarized spectacle lens | Stephen Brown, Ben Ryan | 2021-07-20 |