Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6782115 | Watermark holograms | Hugh L. Brunk, J. Scott Carr, Geoffrey B. Rhoads | 2004-08-24 |
| 6714683 | Wavelet based feature modulation watermarks and related applications | Jun Tian | 2004-03-30 |
| 6683966 | Watermarking recursive hashes into frequency domain regions | Jun Tian, Hugh L. Brunk | 2004-01-27 |