Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8056821 | Security marks simulating natural defects for embedding information in documents | Zhigang Fan, Reiner Eschbach, Calvin Jon Marlett, James R. Low, Shen-Ge Wang | 2011-11-15 |
| 7869090 | Variable data digital pantographs | Shen-Ge Wang, Reiner Eschbach, Farzin Blurfrushan, Edward N. Chapman | 2011-01-11 |
| 7864979 | System and method for embedding dispersed miniature security marks | Zhigang Fan | 2011-01-04 |