Issued Patents All Time
Showing 26–50 of 84 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6874414 | Method and apparatus for screen printing | — | 2005-04-05 |
| 6840721 | Process for producing dies | Karlheinz Mayer | 2005-01-11 |
| 6755441 | Machine detectable document of value | Gerhard Stenzel | 2004-06-29 |
| 6726813 | Security device and method for producing it | Gregor Grauvogl, Jurgen Schutzmann, Friedrich Kretschmar | 2004-04-27 |
| 6688221 | Valuable document with a security element | — | 2004-02-10 |
| 6530602 | Machine detectable document of value | Gerhard Stenzel | 2003-03-11 |
| 6506476 | Printed document having a value, with luminescent authenticity feature | Gerhard Schwenk, Gerhard Stenzel | 2003-01-14 |
| 6503603 | Printed document having a value and comprising a luminescent authenticity feature | Gerhard Schwenk, Gerhard Stenzel | 2003-01-07 |
| 6479133 | Document having a value | Gerhard Stenzel | 2002-11-12 |
| 6454166 | Security document with a security component and method for the production thereof | Gerhard Stenzel | 2002-09-24 |
| 6382677 | Security element and method for producing same | Gregor Grauvogl, Jurgen Schutzmann, Friedrich Kretschmar | 2002-05-07 |
| 6383618 | Printed document comprising a luminescent authenticity feature | Gerhard Schwenk, Gerhard Stenzel | 2002-05-07 |
| 6376017 | Method and device for producing a foil material | Gregor Grauvogl | 2002-04-23 |
| 6344261 | Printed document having a value and comprising a luminescent authenticity feature based on a host lattice | Gerhard Schwenk, Gerhard Stenzel | 2002-02-05 |
| 6337752 | Data carrier having an optically variable element and methods for producing it | Christoph Heckenkamp, Gerhard Stenzel | 2002-01-08 |
| 6318758 | Security document with a security component and method for the production thereof | Gerhard Stenzel | 2001-11-20 |
| 6302989 | Method for producing a laminar compound for transferring optically variable single elements to objects to be protected | — | 2001-10-16 |
| 6294241 | Security document and method of producing it | Gregor Grauvogl | 2001-09-25 |
| 6284396 | Transfer band | Gregor Grauvogl | 2001-09-04 |
| 6155165 | Rotary screen printing cylinder having separated ink zones | — | 2000-12-05 |
| 6146773 | Security document and method for producing it | — | 2000-11-14 |
| 6036232 | Data carrier with an optically variable element | Reinhard Plaschka | 2000-03-14 |
| 5820971 | Security document and method of producing it | Gregor Grauvogl | 1998-10-13 |
| 5817205 | Method and apparatus for making paper of value having an optically variable security element | — | 1998-10-06 |
| 5807456 | Method for producing metallic planar elements on substrates | — | 1998-09-15 |