Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11290886 | Authenticating a mobile id via hash values | Christian Stengel, Joerg Breuer | 2022-03-29 |
| 7555649 | Method for generating digital watermarks for electronic documents | Joerg Schwenk | 2009-06-30 |
| 5781630 | Method and device for accurately dating an electronic document | Klaus Huber | 1998-07-14 |