Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6827257 | Method and apparatus for recording content containing watermark | Tadashi Kobayashi, Hideo Ando, Hisashi Yamada | 2004-12-07 |
| 6741723 | Digital watermark embedding method and apparatus, and digital watermark | Hirofumi Muratani, Hisashi Yamada, Toru Kambayashi, Shinichiro Koto | 2004-05-25 |