Issued Patents All Time
Showing 25 most recent of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11523443 | Extraction, conversion, and transmission of user packet from encapsulated packet | — | 2022-12-06 |
| 9912527 | Communication device, communication system, method for determining path, and program | Zhenlong Cui, Akira Sakurai | 2018-03-06 |
| 9537757 | Adding link aggregation group to hitless protection in packet switched networks | Junqiang Hu, Yoshinobu Ooto, Yoshiaki Aono, Ting Wang | 2017-01-03 |
| 9369409 | End-to-end hitless protection in packet switched networks | Junqiang Hu, Yoshinobu Ooto, Yoshiaki Aono, Ting Wang | 2016-06-14 |
| 9300558 | Delay measurement system and delay measurement method, as well as delay measurement device and delay measurement program | Masaki Umayabashi, Zhenlong Cui | 2016-03-29 |
| 9215167 | Network system | Hiroshi Tanaka, Itaru Nishioka | 2015-12-15 |
| 9012031 | Steel fuel conveying pipe | — | 2015-04-21 |
| 8897308 | Node, a monitoring management method used for a node, and a transfer system, an input circuit and an output circuit | Zhenlong Cui, Hiroyuki Takagi, Masaki Umayabashi, Akira Sakurai, Hiroshi Tanaka | 2014-11-25 |
| 8824511 | Clock synchronization system, node, clock synchronization method, and program | Hideo Yoshimi | 2014-09-02 |
| 8737238 | Congestion detecting method and communication node | Masaki Umayabashi, Zhenlong Cui, Hiroyuki Takagi | 2014-05-27 |
| 8737401 | Communication using MPLS-ARP messaging | Zhenlong Cui, Akira Sakurai | 2014-05-27 |
| 8731036 | Packet filter-based clock synchronization system, apparatus, and method, and program thereof | Masaki Umayabashi, Zhenlong Cui | 2014-05-20 |
| 8711686 | Packet transmission system and fault recovery method | Zhenlong Cui, Masaki Umayabashi, Akira Sakurai | 2014-04-29 |
| 8693338 | Quality measuring system, quality measuring apparatus, quality measuring method, and program | Ryuichi Ikematsu, Hiroyuki Takagi, Zhenlong Cui | 2014-04-08 |
| 8675665 | Clock synchronization system, its method and program | Masaki Umayabashi, Hideo Yoshimi, Zhenlong Cui, Atsushi Iwata | 2014-03-18 |
| 8565124 | Node, network, correspondence relationship generation method and frame transfer program | Masaki Umayabashi, Daisaku Ogasahara, Nobuyuki Enomoto, Youichi Hidaka, Atsushi Iwata | 2013-10-22 |
| 8218446 | Frame transfer route confirmation method, node, frame transfer route confirmation program and frame transfer route confirmation system | Masaki Umayabashi | 2012-07-10 |
| 8094584 | Node, network system, frame transfer method, and frame transfer program | Masaki Umayabashi, Nobuyuki Enomoto, Youichi Hidaka, Daisaku Ogasahara, Atsushi Iwata | 2012-01-10 |
| 7898942 | Ring network system, failure recovery method, failure detection method, node and program for node | Masahiro Sakauchi, Daisaku Ogasahara | 2011-03-01 |
| 7848340 | System and method for transmission of data in packet ring network system | Masahiro Sakauchi, Daisaku Ogasahara | 2010-12-07 |
| 7831715 | Communication system, communication method, and program | Hideo Yoshimi, Nobuyuki Enomoto, Zhenlong Cui, Atsushi Iwata | 2010-11-09 |
| 7646789 | Communication system including several communication terminals and server, its communication terminal, its server and data transfer control program | Masaki Umayabashi, Satomi Shioiri, Makoto Shibutani | 2010-01-12 |
| 7385918 | Packet protection method and transmission device in ring network, and program therefor | — | 2008-06-10 |
| 7324440 | Multiring control method, node using the method, and control program | Masaki Umayabashi | 2008-01-29 |
| 7200155 | Communication system capable of efficiently transmitting data from terminals to server | Masaki Umayabashi, Makoto Shibutani | 2007-04-03 |