Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5304789 | Multilayer card-shaped data carrier and method for producing same | Erwin Lob, Alexander Hierweger, Wolfgang Killar, Wittlich Kaule | 1994-04-19 |
| 5298922 | Multilayer data carrier and methods for writing on a multilayer data carrier | Joseph Lass, Alexander Hierweger, Wolfgang Killar, Erwin Lob | 1994-03-29 |
| 5122813 | Method of making a multilayer identification card usable as a printing block | Joseph Lass, Alexander Hierweger, Erwin Lob | 1992-06-16 |
| 5005872 | Multilayer identity card usable as a printing block and a method of producing it | Joseph Lass, Alexander Hierweger, Erwin Lob | 1991-04-09 |
| 4894110 | Identification card with a visible authenticity feature | Joseph Lass, Wolfgang Becker, Werner Herget, Erwin Lob | 1990-01-16 |
| 4765656 | Data carrier having an optical authenticity feature and methods for producing and testing said data carrier | Wolfgang Becker, Alexander Hierweger, Erwin Lob, Joseph Lass, Wittich Kaule | 1988-08-23 |
| 4766026 | Identification card with a visible authenticity feature and a method of manufacturing said card | Joseph Lass, Wolfgang Becker, Werner Herget, Erwin Lob | 1988-08-23 |