Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11148447 | Intaglio printing ink, printing process and printed article | Johann Kecht, Stephan Steinlein | 2021-10-19 |
| 10953684 | Pigment system, luminescent dye system, and value document | Johann Kecht, Axel Schlossbauer | 2021-03-23 |