Issued Patents All Time
Showing 76–81 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6411392 | Method and apparatus for data hiding in printed images | Walter Bender | 2002-06-25 |
| 6212285 | Method and apparatus for multi-bit zoned data hiding in printed images | Walter Bender | 2001-04-03 |
| 6201879 | Method and apparatus for logo hiding in images | Walter Bender, Norishige Morimoto | 2001-03-13 |
| 5893067 | Method and apparatus for echo data hiding in audio signals | Walter Bender, Norishige Morimoto | 1999-04-06 |
| 5870499 | Method and apparatus for data hiding in images | Walter Bender, Norishige Morimoto | 1999-02-09 |
| 5689587 | Method and apparatus for data hiding in images | Walter Bender, Norishige Morimoto | 1997-11-18 |