Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7488002 | Security and/or value document | Benedikt Ahlers, Roland Gutmann, Ralf Paugstadt, Armim Franz-Burgholz | 2009-02-10 |
| 7252790 | Zinc sulfide electroluminophores and method for production thereof | Benedikt Ahlers, Arnim Franz-Burgholz, Hans-Jurgen Limburg, Detlef Starick, Monika Voh | 2007-08-07 |
| 7248730 | Certified paper discriminating apparatus | Toru Matsui, Benedikt Ahlers, Anett Bailleu, Roland Gutmann | 2007-07-24 |
| 7242796 | Certified paper and an apparatus for discriminating the genuineness thereof | Toru Matsui, Benedikt Ahlers, Anett Bailleu, Roland Gutmann | 2007-07-10 |
| 7067071 | Zinc sulfide electroluminophores and method for production thereof | Benedikt Ahlers, Arnim Franz-Burgholz, Hans-Jurgen Limburg, Detlef Starick, Monika Voh | 2006-06-27 |
| 6827283 | Product with a security element | Dirk Fischer, Lothar Fannasch, Michael Hennemeyer-Schwenker, Mathias Schumacher | 2004-12-07 |
| 6659351 | Electric effect-based security feature on security documents and on documents of value-proof process belonging thereto | Anett Bailleu | 2003-12-09 |
| 6600416 | Device for validating authenticity features on documents of value and security documents | Benedikt Ahlers, Roland Gutmann, Arnim Franz-Burgholz, 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, Arnim Franz-Burgholz, Roland Gutmann, Wolfgang Schmidt | 2003-03-11 |
| 6234537 | Security document with optically excitable dyes for authenticity check | Roland Gutmann, Benedikt Ahlers, Ralf Paugstadt, Arnim Franz-Burgholz | 2001-05-22 |
| 5805824 | Method of propagating data through a distributed information system | — | 1998-09-08 |