| 10836198 |
Securing the authenticity of value documents by means of characteristic substances |
Ulrich Scholz |
2020-11-17 |
| 9987874 |
Authenticity feature in the form of luminescent substances |
Thomas Giering, Peter Kersten, Ulrich Magg |
2018-06-05 |
| 9878573 |
Authenticity feature in the form of luminescent substances |
Thomas Giering, Peter Kersten, Ulrich Magg |
2018-01-30 |
| 8616584 |
Value document, production and verification of value documents |
Ulrich Scholz, Ulrich Magg, Thomas Giering, Franz Muller, Klaus Thierauf |
2013-12-31 |
| 8367188 |
Authenticity mark in the form of luminescent substances |
Stephan Heer, Thomas Giering, Kai Uwe Stock |
2013-02-05 |
| 7999237 |
Valuable document |
Gerhard Schwenk, Ulrich Magg, Ulrich Scholz |
2011-08-16 |
| 6726813 |
Security device and method for producing it |
Wittich Kaule, Jurgen Schutzmann, Friedrich Kretschmar |
2004-04-27 |
| 6382677 |
Security element and method for producing same |
Wittich Kaule, Jurgen Schutzmann, Friedrich Kretschmar |
2002-05-07 |
| 6376017 |
Method and device for producing a foil material |
Wittich Kaule |
2002-04-23 |
| 6294241 |
Security document and method of producing it |
Wittich Kaule |
2001-09-25 |
| 6284396 |
Transfer band |
Wittich Kaule |
2001-09-04 |
| 5820971 |
Security document and method of producing it |
Wittich Kaule |
1998-10-13 |