Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6952486 | Digital watermark embedding method and apparatus, and digital watermark | Hirofumi Muratani, Hisashi Yamada, Toru Kambayashi, Shinichiro Koto | 2005-10-04 |
| 6945455 | Method and apparatus for recording content containing watermark | Tadashi Kobayashi, Hideo Ando, Hisashi Yamada | 2005-09-20 |