Issued Patents All Time
Showing 1–25 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12365802 | Composition including a color shifting pigment having a different particle size | Matthew R. Witzman, Bryan James CLIFTON, Paul T. Kohlmann | 2025-07-22 |
| 12359072 | Pigment including an intermetallic compound | Vladimir P. Raksha, Paul T. Kohlmann | 2025-07-15 |
| 12350950 | Article with angled reflective segments | Vladimir P. Raksha | 2025-07-08 |
| 12344024 | Optical security element | Vladimir P. Raksha | 2025-07-01 |
| 12311691 | Orienting magnetically-orientable flakes | Vladimir P. Raksha | 2025-05-27 |
| 12275267 | Security pigment and optical security element | Paul T. Kohlmann, Vladimir P. Raksha | 2025-04-15 |
| 12187901 | Composition including reflective particles | Paul T. Kohlmann | 2025-01-07 |
| 12152152 | Security pigment | Vladimir P. Raksha | 2024-11-26 |
| 12083813 | Printing machine and fixed patterned plate | Vladimir P. Raksha, Alberto Argoitia, Paul T. Kohlmann | 2024-09-10 |
| 12064987 | Optical device with magnetic flakes and structured substrate | Vladimir P. Raksha, Paul G. Coombs | 2024-08-20 |
| 12045001 | Optical security device based on a surface of revolution | Vladimir P. Raksha | 2024-07-23 |
| 11945972 | Composition including a color shifting pigment and a color filter | Paul T. Kohlmann | 2024-04-02 |
| 11945255 | Optical security element | Vladimir P. Raksha | 2024-04-02 |
| 11833849 | Security ink based security feature | Vladimir P. Raksha | 2023-12-05 |
| 11787956 | Magnetic multilayer pigment flake and coating composition | Vladimir P. Raksha, Paul T. Kohlmann, Paul G. Coombs | 2023-10-17 |
| 11680175 | Composition including a color shifting pigment and a color filter | Paul T. Kohlmann | 2023-06-20 |
| 11554603 | Security feature based on a single axis alignment of mirrors in a structured surface that forms a micro mirror array | Vladimir P. Raksha, Paul G. Coombs, Robert B. Sargent, Michael Ray Nofi | 2023-01-17 |
| 11441041 | Magnetic multilayer pigment flake and coating composition | Vladimir P. Raksha, Paul T. Kohlmann, Paul G. Coombs | 2022-09-13 |
| 11193002 | Orienting magnetically-orientable flakes | Vladimir P. Raksha | 2021-12-07 |
| 11186110 | Article with angled reflective segments | Vladimir P. Raksha | 2021-11-30 |
| 11150595 | Optical security device based on a surface of revolution | Vladimir P. Raksha | 2021-10-19 |
| 11079525 | Matched interference pigments or foils having viewing angle dependent mismatch | Matthew R. Witzman, Paul T. Kohlmann, Charles T. Markantes | 2021-08-03 |
| 11007808 | Metameric security devices | Paul T. Kohlmann | 2021-05-18 |
| 11001720 | Flakes with undulate borders and methods of forming thereof | Alberto Argoitia, Laurence Holden | 2021-05-11 |
| 10981410 | Security feature based on a single axis alignment of mirrors in a structured surface that forms a micro mirror array | Vladimir P. Raksha, Paul G. Coombs, Robert B. Sargent, Michael Ray Nofi | 2021-04-20 |