Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8832307 | Telephony system, connection control method, connection control device and recording medium | Tomoyuki Furutono, Junji Tagane, Akio Koga, Masahiro Tanaka, Kaori Chigusa +3 more | 2014-09-09 |
| 8300633 | Network quality monitoring device and method for internet services involving signaling | Junji Tagane, Kazunori Umezaki, Katsuyuki Fujiyoshi | 2012-10-30 |
| 8189764 | Server for transferring a communication message | Junji Tagane | 2012-05-29 |
| 6238777 | Printed-circuit board | Koji Kondo | 2001-05-29 |