Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6779044 | Access control for an information processing device | — | 2004-08-17 |
| 6757405 | Digital watermark embedding device, digital watermark detection device and recording medium recording computer readable program for realizing functions of two devices | Hirofumi Muratani, Naoki Endo | 2004-06-29 |