Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7523311 | Method for embedding electronic watermark, decoding method, and devices for the same | — | 2009-04-21 |
| 6983058 | Method of embedding digital watermark, storage medium in which the method is stored, method of identifying embedded digital watermark, and apparatus for embedding digital watermark | Yoshihide Fukuoka | 2006-01-03 |
| 6973195 | Method for embedding electronic watermark and method for decoding the same | — | 2005-12-06 |
| 6539356 | Signal encoding and decoding method with electronic watermarking | Munetoshi Iwakiri | 2003-03-25 |
| 6425082 | Watermark applied to one-dimensional data | Munetoshi Iwakiri | 2002-07-23 |
| 5861619 | Method of and apparatus for embedding data into an electronic document by modulating spaces between words | Naoharu Horino, Masayuki Suto | 1999-01-19 |