Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10522149 | Call control system and call control method | Takashi Sugiyama | 2019-12-31 |
| 10250744 | Call center system and voice recognition control method of the same | Takashi Sugiyama, Jumpei Yamaguchi, Taketoshi Kurihana | 2019-04-02 |