Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8724995 | Passive optical network system and operating method thereof | Tohru Kazawa, Akihiko Tsuchiya, Norihiro Sakamoto, Yusuke Yajima | 2014-05-13 |
| 8488445 | Gateway device, optical network terminal, and passive optical network system | Takahiro Yoshida, Tetsuhiko Takahashi, Yu Mitsui, Ryuji Ishii | 2013-07-16 |
| 7751394 | Multicast packet relay device adapted for virtual router | Tetsuro Yoshimoto, Kengo Ijima | 2010-07-06 |
| 7567505 | VRRP technology keeping VR confidentiality | Tomoyuki Iijima, Masayuki Hino | 2009-07-28 |
| 7339931 | Packet transfer apparatus connectable with mobile terminals | Tetsuro Yoshimoto, Eri Kawai | 2008-03-04 |
| 6810421 | Communication network system and method for controlling services in a communication network system | Takeshi Ishizaki, Osamu Takada, Tohru Setoyama, Kenichi Yoshida | 2004-10-26 |
| 6708209 | Network system having plural networks for performing quality guarantee among the networks having different policies | Tomoichi Ebata, Shigeru Miyake, Osamu Takada, Minoru Koizumi, Yoshiyuki Kurosaki +2 more | 2004-03-16 |
| 6700874 | Network system having route verification function and the component apparatuses and method thereof | Takeshi Ishizaki, Osamu Takada, Tohru Setoyama | 2004-03-02 |
| 6278712 | Network and switching node in which resource can be reserved | Takeshi Ishizaki, Shuji Ohno, Masataka Ohta, Naoya Ikeda | 2001-08-21 |
| 6212164 | ATM switch congestion control method of connection setup requests and priority control method for receiving connection requests | Toshihiko Murakami, Tokuhiro Niwa, Tomihisa Nishijima | 2001-04-03 |
| 6014382 | ATM switching system including a switching control portion for distributing call set-up requirement signals | Toshihiko Murakami, Osamu Takada, Tomihisa Nishijima | 2000-01-11 |
| 5777994 | ATM switch and intermediate system | Toshihiko Murakami, Hidehiro Fukushima, Osamu Takada, Atsushi Kimoto | 1998-07-07 |