Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5206721 | Television conference system | Youichi Ashida, Yuji Yoshida, Toshihiro Homma, Hitoshi Sato, Hitoshi Ishiguro +2 more | 1993-04-27 |
| 4654483 | Electronic conference system | Fujio Sekiguchi, Tomoyuki Chou, Nobumasa Ohya, Hitoshi Sato | 1987-03-31 |
| 4501931 | Color information input system for electronic blackboard | Nobumasa Ohya, Hitoshi Sato | 1985-02-26 |