Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8663820 | Security document with luminescent transition metal doping | Thomas Giering, Fritz Stahr | 2014-03-04 |
| 7648074 | Article, especially valuable and security document, comprising a security feature | Thomas Attenberger, Wolfgang Deckenbach | 2010-01-19 |
| 6858323 | Valuable document | Thomas Giering, Thomas Attenberger | 2005-02-22 |
| 6186438 | Apparatus for positioning a smoothing roll mounted so as to be displaceable and adjustable during coil formation against the reeling mandrel of a strip coiler | Josef Zeppenfeld, Jurgen Grell | 2001-02-13 |