Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6646966 | Automatic storage medium identifying method and device, automatic music CD identifying method and device, storage medium playback method and device, and storage medium as music CD | Ryo Kajiyama, Seiji Tsutsui, Hitoshi Sakazume | 2003-11-11 |
| 6288991 | Storage medium playback method and device | Ryo Kajiyama, Seiji Tsutsui, Hitoshi Sakazume | 2001-09-11 |
| 5880388 | Karaoke system for synchronizing and reproducing a performance data, and karaoke system configuration method | Ryo Kajiyama, Seiji Tsutsui, Hitoshi Sakazume | 1999-03-09 |