Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5959761 | Incorporating photochromic molecules in light transmissible articles | Colin Maurice Perrott | 1999-09-28 |
| 5882556 | Method of preparing photochromic article | Colin Maurice Perrott, Helena Kloubek, Ian Michael Threlfall | 1999-03-16 |
| 5149183 | Color enhancing lens | Colin Maurice Perrott | 1992-09-22 |