Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6801713 | Recorded program viewing support method | Hiromi Ukai, Akira Tanaka, Hideo Nishijima, Hitoaki Owashi | 2004-10-05 |
| 6792425 | Secure multi database system including a client, multi database server, and database server | Mitsuhiko Yoshimura, Akira Maeda, Shigetoshi Hayashi | 2004-09-14 |
| 6751598 | Digital content distribution system and protection method | Koichi Sano | 2004-06-15 |
| 6691310 | Information receiver and information transmission and reception method providing information usage status | Shigeki Hirasawa, Eiichi Yukino, Michio Morioka, Toru Yamada, Nobukage Takahashi | 2004-02-10 |