Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8077364 | Security system, particularly for valuable documents | Irina Menz, Gunther Dausmann, Benedikt Ahlers | 2011-12-13 |
| 7724408 | Security system, especially for security documents | Irina Menz, Gunther Dausmann, Benedikt Ahlers | 2010-05-25 |
| 7427029 | Valuable document comprising a security element and method for producing said valuable document | Anett Bailleu, Hans Demanowski, Daniel Grammlich, Manfred Paeschke, Konstantin Pötschke +1 more | 2008-09-23 |
| 7315407 | Security system, particularly for valuable documents | Irina Menz, Gunther Dausmann, Benedikt Ahlers | 2008-01-01 |
| 7252790 | Zinc sulfide electroluminophores and method for production thereof | Frank Kappe, Benedikt Ahlers, Hans-Jurgen Limburg, Detlef Starick, Monika Voh | 2007-08-07 |
| 7092583 | Apparatus and method for detecting the authenticity of secured documents | Benedikt Ahlers, Anett Bailleu, Oliver Muth, Manfred Paeschke, Hans Zerbel | 2006-08-15 |
| 7067071 | Zinc sulfide electroluminophores and method for production thereof | Frank Kappe, Benedikt Ahlers, Hans-Jurgen Limburg, Detlef Starick, Monika Voh | 2006-06-27 |
| 6784441 | Handsensor for authenticity identification of signets on documents | Benedikt Ahlers, Roland Gutmann, Anett Bailleu, Manfred Paeschke, Peter Halter +2 more | 2004-08-31 |
| 6750465 | Device for evaluating diffractive authenticity features | Roland Gutmann, Harald Hoeppner, Thomas Loer, Detlef Martens, Gunther Dausmann +5 more | 2004-06-15 |
| 6741336 | Sensor for authenticity identification of signets on documents | Benedikt Ahlers, Roland Gutmann, Anett Bailleu, Manfred Paeschke, Peter Halter | 2004-05-25 |
| 6631676 | Process and apparatus for gravure | Armin Weichmann, Rainer Stamme, Andreas Schiller, Hans-Peter Fleischmann | 2003-10-14 |
| 6600416 | Device for validating authenticity features on documents of value and security documents | Frank Kappe, Benedikt Ahlers, Roland Gutmann, Anett Bailleu | 2003-07-29 |
| 6530527 | Value or security product with luminescent security elements and method for the production and use thereof in respect to visual and machine-operated detection of authenticity | Benedikt Ahlers, Roland Gutmann, Wolfgang Schmidt, Frank Kappe | 2003-03-11 |
| 6234537 | Security document with optically excitable dyes for authenticity check | Roland Gutmann, Benedikt Ahlers, Frank Kappe, Ralf Paugstadt | 2001-05-22 |
| 5601022 | Process and device for producing a printing form with a narrow transfer foil | Horst Dauer, Bernhard Feller, Josef Gottling | 1997-02-11 |