Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6738904 | Recordable storage medium with protected data area | Antonius Kalker, Johan Cornelis Talstra | 2004-05-18 |
| 6718287 | Watermark detection | Job Cornelis Oostveen, Antonius Kalker | 2004-04-06 |
| 6714659 | Watermarking an information signal | — | 2004-03-30 |