Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6861113 | Recording paper that can be printed on the reverse | Matthias Marx | 2005-03-01 |
| 6632773 | Heat-sensitive recording materials and method for authenticity checking | Karsten Süssenbach, Gerhard Stork, Michael Reimann, Wolfgang Wagner | 2003-10-14 |
| 6440898 | Heat-sensitive recording sheet with a security element in the form of pressure-sensitive microcapsules | — | 2002-08-27 |