Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7295994 | Information distribution system, terminal apparatus, information center, recording medium, and information distribution method | Tadao Yoshida, Yoshihiko Hitotsui | 2007-11-13 |
| 6160788 | Data recording medium, recording and reproducing system and residual amount display method | Toshiharu Kobayashi, Katsuyuki Koizumi | 2000-12-12 |