Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6628843 | Image enhancement on JPEG compressed image data | Reiner Eschbach | 2003-09-30 |
| 6526155 | Systems and methods for producing visible watermarks by halftoning | Shen-Ge Wang | 2003-02-25 |
| 6515764 | Method and apparatus for detecting photocopier tracking signatures | Zhigang Fan, Erie J. Schneider | 2003-02-04 |