Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6542629 | Digital imaging method and apparatus for detection of document security marks | John W. Wu, Mike Chien-Fang Chen, Zhigang Fan | 2003-04-01 |
| 6317524 | Anti-counterfeit detection method | John W. Wu, Mike Chien-Fang Chen, Zhigang Fan | 2001-11-13 |
| 6181813 | Method for counterfeit currency detection using orthogonal line comparison | Zhigang Fan, John W. Wu, Felice A. Micco, Mike Chien-Fang Chen | 2001-01-30 |