Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11084236 | Method for preparing an optical element which colors in a non-uniform linear pattern | Joseph D. Turpen, William D. Carpenter, Kevin J. Stewart | 2021-08-10 |
| 10994563 | Method for coloring an optical element in a non-uniform linear pattern | William D. Carpenter | 2021-05-04 |
| 10444537 | Optical article having a photoluminescent mark | Anil Kumar, Chenguang Li, William D. Carpenter | 2019-10-15 |
| 10371866 | Optical element having a coating for enhanced visibility of a mark and method for making the optical element | Joseph D. Turpen, William D. Carpenter, Kevin J. Stewart | 2019-08-06 |