Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9690021 | Photochromic optical article having allophanate protective coating and process for making same | Joseph D. Turpen, Cynthia Kutchko, Vitawat Lahsangah, Jerry L. Koenig, II | 2017-06-27 |