Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6104826 | Method of watermark-embedding/extracting identification information into/from picture data and apparatus thereof, and computer readable medium | Akira Nakagawa, Kimihiko Kazui, Atsuko Tada, Eishi Morimatsu | 2000-08-15 |