Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6952486 | Digital watermark embedding method and apparatus, and digital watermark | Tomoo Yamakage, Hirofumi Muratani, Hisashi Yamada, Shinichiro Koto | 2005-10-04 |
| 6941283 | Information recording device and information reproducing device | Koichiro Akiyama, Yutaka Handa, Yoshihiro Ohmori | 2005-09-06 |