Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7065226 | Method for embedding information and extracting the same | Kousuke Anzai, Isao Echizen, Hiroshi Yoshiura | 2006-06-20 |
| 7047412 | Digital watermark data embedding method, and digital watermark data embeddability analyzing method | Isao Echizen, Hiroshi Yoshiura, Ryoichi Sasaki, Shinichiro Harano | 2006-05-16 |
| 6865677 | Contents rendering control method, contents reproducing equipment, and contents distribution equipment | Isao Echizen, Hiroshi Yoshiura, Ryoichi Sasaki, Shinichiro Harano | 2005-03-08 |
| 6707927 | Steganographic system, method, program and storage medium therefor | Kazumasa Kita, Hiroshi Yoshiura, Yutaka Kurosu, Miki Tanaka, Tomoyuki Kaji | 2004-03-16 |