Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7894112 | Security element with a diffraction structure having subareas representing recognizable information | Wittich Kaule, Hajo Mueck | 2011-02-22 |
| 5783275 | Antifalsification paper | Hajo Muck | 1998-07-21 |