Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8262134 | Value document | Thomas Giering, Gerhard Stenzel, Wittich Kaule | 2012-09-11 |
| 7999237 | Valuable document | Gregor Grauvogl, Ulrich Magg, Ulrich Scholz | 2011-08-16 |
| 7906201 | Value document | Thomas Giering | 2011-03-15 |
| 7845570 | Value document | Thomas Giering, Gerhard Stenzel, Wittich Kaule | 2010-12-07 |
| 7819434 | Value document | Thomas Giering, Gerhard Stenzel, Wittich Kaule | 2010-10-26 |
| 7790056 | Coding system for value documents | Thomas Giering | 2010-09-07 |
| 7487919 | System for checking the security features of documents of value | Thomas Giering | 2009-02-10 |
| 6974623 | Antifalsification paper provided with applied coding consisting of luminescent mottled fibers | — | 2005-12-13 |
| 6506476 | Printed document having a value, with luminescent authenticity feature | Wittich Kaule, Gerhard Stenzel | 2003-01-14 |
| 6503603 | Printed document having a value and comprising a luminescent authenticity feature | Wittich Kaule, Gerhard Stenzel | 2003-01-07 |
| 6383618 | Printed document comprising a luminescent authenticity feature | Wittich Kaule, Gerhard Stenzel | 2002-05-07 |
| 6344261 | Printed document having a value and comprising a luminescent authenticity feature based on a host lattice | Wittich Kaule, Gerhard Stenzel | 2002-02-05 |
| 5935693 | Data carrier | Ulrich Scholz, Ulrich Magg, Johannes Leist | 1999-08-10 |
| 5795379 | Pigments and a method for producing them | Ulrich Scholz, Ulrich Magg, Johannes Leist | 1998-08-18 |
| 5509691 | Security element in the form of threads or strips to be embedded in security documents and a method for producing and testing the same | Wittich Kaule, Wilhelm Ilgmann, Gerhard Stenzel | 1996-04-23 |
| 5324079 | Security document having a security thread embedded therein | Wittich Kaule, Wilhelm Ilgmann, Gerhard Stenzel | 1994-06-28 |
| 5112672 | Security document having an electrically conductive security element embedded therein | Wittich Kaule, Wilhelm Ilgmann, Gerhard Stenzel | 1992-05-12 |
| 4892336 | Antifalsification document having a security thread embedded therein and a method for producing the same | Wittich Kaule, Jürgen Moll, Gerhard Stenzel | 1990-01-09 |
| 4756557 | Security document having a security thread embedded therein and methods for producing and testing the authenticity of the security document | Wittich Kaule, Gerhard Stenzel, Jürgen Moll | 1988-07-12 |
| 4533244 | Process for authenticity determination of security documents with security features in the form of luminescing substances | Wittich Kaule, Gerhard Stenzel | 1985-08-06 |
| 4463970 | Security paper having camouflage materials to protect its authenticity features | Wittich Kaule, Gerhard Stenzel | 1984-08-07 |
| 4452843 | Security paper | Wittich Kaule, Gerhard Stenzel | 1984-06-05 |
| 4451530 | Security paper with authenticity features in the form of luminescing substances | Wittich Kaule, Gerhard Stenzel | 1984-05-29 |
| 4446204 | Security paper with authenticity features | Wittich Kaule, Gerhard Stenzel | 1984-05-01 |
| 4442170 | Security document with security features in the form of luminescing substances | Wittich Kaule, Gerhard Stenzel | 1984-04-10 |