Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6804376 | Equipment employing watermark-based authentication function | Geoffrey B. Rhoads | 2004-10-12 |
| 6763122 | Watermarking an image in color plane separations and detecting such watermarks | Tony F. Rodriguez, Marc D. Miller, Alastair M. Reed, Geoffrey B. Rhoads | 2004-07-13 |
| 6744906 | Methods and systems using multiple watermarks | Geoffrey B. Rhoads | 2004-06-01 |
| 6728390 | Methods and systems using multiple watermarks | Geoffrey B. Rhoads | 2004-04-27 |