Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6782116 | Apparatus and methods for improving detection of watermarks in content that has undergone a lossy transformation | Justin Picard, Niels J. Thorwirth | 2004-08-24 |
| 6754822 | Active watermarks and watermark agents | — | 2004-06-22 |
| 6751336 | Digital authentication with digital and analog documents | — | 2004-06-15 |