Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10499198 | Positioning device and positioning system | Yu Yoshiie, Akihiko Fujiwara | 2019-12-03 |
| 10318989 | Information providing method and system using signage device | Akihiko Fujiwara, Masaaki Yasunaga, Tetsuya Nobuoka | 2019-06-11 |
| 10257659 | Positioning device and positioning system | Yu Yoshiie, Akihiko Fujiwara | 2019-04-09 |