Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636613 | Method for embedding manipulation-secure digital fingerprints into electronic documents | Johannes Ueberberg | 2003-10-21 |
| 6590995 | Method of inserting manipulation-proof digital fingerprints into electronic documents | Johannes Ueberberg | 2003-07-08 |