Issued Patents 2021
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11079525 | Matched interference pigments or foils having viewing angle dependent mismatch | Cornelis Jan Delst, Matthew R. Witzman, Charles T. Markantes | 2021-08-03 |
| 11007808 | Metameric security devices | Cornelis Jan Delst | 2021-05-18 |
| 10928579 | Optical devices | Johannes P. Seydel, Mark Tevis, Kangning Liang, Jaroslaw Zieba, Jeffrey James Kuna | 2021-02-23 |
| 10882280 | Magnetic articles | Johannes P. Seydel, Mark Tevis, Kangning Liang, Jeffrey James Kuna, Jaroslaw Zieba | 2021-01-05 |