Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5868798 | Treatment of hides | Colin Anderson, Yuri Obst | 1999-02-09 |
| 4503177 | Stabilization of photochromic compounds, and the use of stabilized photochromic compounds | Paul Reid | 1985-03-05 |