Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6700129 | Electronic board system and coordinates-inputting pen | Yutaka Usuda, Yoshikazu Shinkai, Yuji Tsukamoto, Jun Namiki | 2004-03-02 |
| 6437314 | Coordinate input pen, and electronic board, coordinate input system and electronic board system using the coordinate input pen | Yutaka Usuda, Sueo Amemiya, Jun Namiki, Naoki Miyauchi | 2002-08-20 |