Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636615 | Methods and systems using multiple watermarks | Geoffrey B. Rhoads | 2003-10-21 |
| 6614914 | Watermark embedder and reader | Geoffrey B. Rhoads | 2003-09-02 |
| 6594373 | Multi-carrier watermarks using carrier signals modulated with auxiliary messages | — | 2003-07-15 |
| 6574350 | Digital watermarking employing both frail and robust watermarks | Geoffrey B. Rhoads | 2003-06-03 |