Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8103051 | Multimedia data embedding and decoding | Ahmed Tewfik, Bin Zhu | 2012-01-24 |
| 7454034 | Digital watermarking of tonal and non-tonal components of media signals | Ahmed Tewfik, Bin Zhu | 2008-11-18 |
| 6915481 | Transactional watermarking | Ahmed Tewfik, Bin Zhu | 2005-07-05 |
| 6751337 | Digital watermark detecting with weighting functions | Ahmed Tewfik, Bin Zhu | 2004-06-15 |
| 6442283 | Multimedia data embedding | Ahmed Tewfik, Bin Zhu | 2002-08-27 |
| 6282299 | Method and apparatus for video watermarking using perceptual masks | Ahmed Tewfik, Bin Zhu | 2001-08-28 |
| 6272634 | Digital watermarking to resolve multiple claims of ownership | Ahmed Tewfik, Bin Zhu | 2001-08-07 |
| 6226387 | Method and apparatus for scene-based video watermarking | Ahmed Tewfik, Bin Zhu | 2001-05-01 |
| 6061793 | Method and apparatus for embedding data, including watermarks, in human perceptible sounds | Ahmed Tewfik, Bin Zhu, Laurence Boney | 2000-05-09 |
| 6031914 | Method and apparatus for embedding data, including watermarks, in human perceptible images | Ahmed Tewfik, Bin Zhu | 2000-02-29 |
| 5987459 | Image and document management system for content-based retrieval | Ahmed Tewfik, Srinath Hosur | 1999-11-16 |