Inventor · disambiguated record
Kazuma Yumoto
Also filed as: YUMOTO KAZUMA
34 granted patents·10 pending applications·838 citations·filing 1995–2015
97Inventor score
Top patents by PatentIndex Score
44 records- 0196US7233589B2Communication system and communication methodHITACHI LTD·Filed 2002·Granted Jun 19, 2007·160 cites·12 claims
- 0291US7813299B2Session control system for hierarchical relaying processesHITACHI LTD·Filed 2005·Granted Oct 12, 2010·27 cites·10 claims
- 0391US7508822B2Communication system and communication methodHITACHI LTD·Filed 2007·Granted Mar 24, 2009·22 cites·7 claims
- 0491US6778661B1Multimedia call distribution systemHITACHI LTD·Filed 2000·Granted Aug 17, 2004·86 cites·18 claims
- 0589US7337465B2Peer-to-peer communication apparatus and communication methodHITACHI LTD·Filed 2003·Granted Feb 26, 2008·68 cites·7 claims
- 0685US8271667B2Information service communication network system and session management serverHOSHINO KAZUYOSHI·Filed 2005·Granted Sep 18, 2012·22 cites·12 claims
- 0785US6275977B1Application cooperation method and apparatusHITACHI LTD·Filed 1998·Granted Aug 14, 2001·131 cites·16 claims
- 0884US8095681B2Load balancing server and systemYUMOTO KAZUMA·Filed 2006·Granted Jan 10, 2012·15 cites·5 claims
- 0984US7764668B2Signaling gateway for multihop-relaying a signaling messageHITACHI LTD·Filed 2005·Granted Jul 27, 2010·13 cites·7 claims
- 1079US8832279B2Network system, machine allocation device and machine allocation methodBABA TAKASHIGE·Filed 2012·Granted Sep 9, 2014·9 cites·20 claims
- 1179US8239468B2Session QoS control apparatusIKEDA HIROKI·Filed 2009·Granted Aug 7, 2012·7 cites·20 claims
- 1277US7984494B2Computer system establishing a safe communication pathHITACHI LTD·Filed 2006·Granted Jul 19, 2011·7 cites·9 claims
- 1376US7522591B2Policy settable peer-to-peer session apparatusHITACHI LTD·Filed 2003·Granted Apr 21, 2009·25 cites·4 claims
- 1475US7668911B2Presence server, session control server, and packet relay systemHITACHI LTD·Filed 2005·Granted Feb 23, 2010·7 cites·6 claims
- 1575US7318110B2Storage system, storage device and information common sharing method by utilizing storage deviceHITACHI LTD·Filed 2002·Granted Jan 8, 2008·21 cites·7 claims
- 1673US7606914B2Session QoS control apparatusHITACHI LTD·Filed 2004·Granted Oct 20, 2009·15 cites·6 claims
- 1772US7394804B2Message conversion server and IP telephoneHITACHI LTD·Filed 2003·Granted Jul 1, 2008·19 cites·12 claims
- 1871US7882235B2Session control apparatus, software applied to session control apparatus, communication control method, and network systemHITACHI LTD·Filed 2004·Granted Feb 1, 2011·14 cites·49 claims
- 1970US8547850B2Transport control server, network system and aggregated path setting methodMATSUBARA DAISUKE·Filed 2009·Granted Oct 1, 2013·4 cites·17 claims
- 2068US8027246B2Network system and node apparatusHITACHI LTD·Filed 2008·Granted Sep 27, 2011·4 cites·11 claims
- 2167US8526437B2Communication system and communication control deviceYUMOTO KAZUMA·Filed 2009·Granted Sep 3, 2013·3 cites·6 claims
- 2266US7801051B2Network system, node device and management serverHITACHI LTD·Filed 2007·Granted Sep 21, 2010·3 cites·18 claims
- 2365US9491043B2Communication path switching device, communication path switching method and communication path switching programHITACHI LTD·Filed 2014·Granted Nov 8, 2016·2 cites·17 claims
- 2465US8805976B2Network system, network management server, and configuration scheduling method, using summed processing timeOZAWA YOJI·Filed 2009·Granted Aug 12, 2014·3 cites·12 claims
- 2563US7443842B2Communication control apparatusHITACHI LTD·Filed 2004·Granted Oct 28, 2008·8 cites·3 claims
- 2656US5905495ACommunication system using electronic mailHITACHI LTD·Filed 1997·Granted May 18, 1999·96 cites·4 claims
- 2755US2014379862A1Network system, machine allocation device and machine allocation methodHITACHI LTD·Filed 2014·Application pending·0 cites
- 2851US9088526B2Communication system and communication control deviceHITACHI LTD·Filed 2013·Granted Jul 21, 2015·0 cites·14 claims
- 2950US2016142302A1Network system, machine allocation device and machine allocation methodHITACHI LTD·Filed 2015·Application pending·0 cites
- 3047US2007140444A1Proxy response terminal and systemHITACHI LTD·Filed 2006·Application pending·0 cites
- 3146US8848522B2Telecommunications system and server apparatusYUMOTO KAZUMA·Filed 2009·Granted Sep 30, 2014·0 cites·18 claims
- 3246US8396972B2Session control apparatus, software applied to session control apparatus, communication control method, and network systemYUMOTO KAZUMA·Filed 2010·Granted Mar 12, 2013·0 cites·4 claims
- 3345US2005066038A1Session control system, communication terminal and serversFiled 2004·Application pending·0 cites
- 3445US2009049180A1Gateway apparatusEI NAMI·Filed 2008·Application pending·0 cites
- 3544US2008008091A1Qos CONTROL SYSTEMYUMOTO KAZUMA·Filed 2007·Application pending·0 cites
- 3644US2008225727A1Communication system and routerYOSHIDA HITOSHI·Filed 2008·Application pending·0 cites
- 3743US7778222B2Wireless IP telephone systemHITACHI LTD·Filed 2006·Granted Aug 17, 2010·0 cites·7 claims
- 3843US5856825AImage voice synchronized multimedia mail system and method thereofHITACHI LTD·Filed 1995·Granted Jan 5, 1999·39 cites·2 claims
- 3941US8724641B2Communication system and control method for communication systemBABA TAKASHIGE·Filed 2011·Granted May 13, 2014·0 cites·13 claims
- 4041US2008013545A1QoS CONTROL SYSTEMONO GO·Filed 2007·Application pending·0 cites
- 4140US2011107156A1Computer, computer system, and application execution methodHITACHI LTD·Filed 2010·Application pending·0 cites
- 4239US2014317313A1Nat sub-topology management serverOKITA HIDEKI·Filed 2012·Application pending·0 cites
- 4333US5832217ACommunication system distributing packets according to commands acquired form packets and filtering real time requests from the accepted requests and processing the realtime requests selected by the filterHITACHI LTD·Filed 1996·Granted Nov 3, 1998·5 cites·72 claims
- 4433US5758082AMail terminal equipmentHITACHI LTD·Filed 1996·Granted May 26, 1998·3 cites·46 claims
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