Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9503920 | Base station and communication system to restrict communication service | Takao Someya, Fumiki HASEGAWA, Takefumi Yamada, Hiroki Zukawa, Toshirou Kawahara | 2016-11-22 |
| 6271942 | Optical transmission device and system | Hiroyuki Sasai, Hiroaki Yamamoto, Kuniaki Utsumi, Katsuyuki Fujito | 2001-08-07 |