Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10841218 | Communication relay device and communication relay method | Hiroaki Kameyama, Shinichi Sazawa | 2020-11-17 |
| 8832307 | Telephony system, connection control method, connection control device and recording medium | Junji Tagane, Akio Koga, Ryuji Oda, Masahiro Tanaka, Kaori Chigusa +3 more | 2014-09-09 |
| 7882214 | Communication system and session establishment method | Naohiro Ozaki, Akio Koga | 2011-02-01 |
| 7779131 | Server and communication control method | Minoru Nishida, Kousei Kataoka, Yuichi Haraguchi, Takaaki Taura, Takayuki Uchihira +1 more | 2010-08-17 |
| 7185112 | Network interconnection apparatus for interconnecting a LAN and an ATM network using QoS adjustment | Shinichi Kuranari, Fumiharu Etoh, Hiroki Hamachi | 2007-02-27 |
| 7079491 | Method and node apparatus for filtering ICMP data frame | Masayoshi Nakano, Fumiharu Etoh | 2006-07-18 |
| 6891795 | Node device | Hiroki Hamachi, Fumiharu Etoh | 2005-05-10 |
| 6687230 | Routing system and method | Fumiharu Etoh | 2004-02-03 |
| 6314174 | Apparatus for and method of controlling calls, and storage medium storing call control program | — | 2001-11-06 |