Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11046341 | Satellite positioning apparatus and train control system capable of determining accurate and limited position range of moving object | Wataru Tsujita, Masahiro Shikai, Tadashi Yamamoto, Masashi Asuka, Seiya Nagashima +1 more | 2021-06-29 |
| 10946879 | Rail fracture detection device | Masashi Asuka, Wataru Tsujita, Yoshitsugu Sawa, Daisuke Koshino | 2021-03-16 |