Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10069709 | Communication apparatus and vehicle transmission system | Yuji Ogawa, Shogo Tatsumi | 2018-09-04 |
| 9787542 | Train-information management device and train-information management method | Tetsuo Komura, Takashi Miyauchi, Toshiko Kadono, Akinori Yoshinaga | 2017-10-10 |
| 8260855 | Train communication system, communication device and relay device | Shogo Tatsumi | 2012-09-04 |