Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9804821 | Interaction history management device, interaction device and interaction history management method | Qingzhu Duan, Takaaki Sekiguchi | 2017-10-31 |
| 9641602 | Service provision system | Atsushi Shimizu, Takashi Matsumoto, Hiroyoshi Endo, Tatsuaki Osafune, Haruhiko Sawajiri | 2017-05-02 |