Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9705903 | Call control device, call control method, and call control system | Ryouji Nakamatsu, Hiromitsu Kajiyama, Shigehiko Hirata, Hideo Okawa | 2017-07-11 |
| 8832307 | Telephony system, connection control method, connection control device and recording medium | Tomoyuki Furutono, Junji Tagane, Ryuji Oda, Masahiro Tanaka, Kaori Chigusa +3 more | 2014-09-09 |
| 7882214 | Communication system and session establishment method | Naohiro Ozaki, Tomoyuki Furutono | 2011-02-01 |
| 7773935 | Broadcast information receiving terminal | Norihiro Matsui, Kouji Kobayashi, Yuji Doi | 2010-08-10 |