Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6804209 | Wireless communication control method and wireless transmission apparatus | Shigeru Sugaya, Hidemasa Yoshida, Takanobu Kamo | 2004-10-12 |
| 6775464 | Video duplication control system, video playback device, video recording device, information superimposing and extracting device, and video recording medium | Akira Ogino, Takashi Usui | 2004-08-10 |
| 6693891 | Communication control method and transmission unit | Shigeru Sugaya | 2004-02-17 |