Inventor · disambiguated record
Keiichi Nakatsugawa
Also filed as: NAKATSUGAWA KEIICHI
33 granted patents·17 pending applications·169 citations·filing 1983–2022
96Inventor score
Top patents by PatentIndex Score
50 records- 0190US10193791B2Method of allocating wavelength and wavelength allocation deviceFUJITSU LTD·Filed 2016·Granted Jan 29, 2019·8 cites·5 claims
- 0286US8462896B2Receiving apparatus, transmitting apparatus, reception method, and transmission methodSUGA JUNICHI·Filed 2012·Granted Jun 11, 2013·6 cites·5 claims
- 0386US8423031B2Communication system, base station, relay station, mobile station, and communication methodNAKATSUGAWA KEIICHI·Filed 2012·Granted Apr 16, 2013·8 cites·13 claims
- 0483US7680081B2Mobile nodeFUJITSU LTD·Filed 2005·Granted Mar 16, 2010·16 cites·26 claims
- 0580US7136365B2Mobile node adapted router and home agent routerFUJITSU LTD·Filed 2001·Granted Nov 14, 2006·29 cites·9 claims
- 0677US7929435B2Application handover method for mobile communications system, and mobility management node and mobile node used in the mobile communications systemFUJITSU LTD·Filed 2005·Granted Apr 19, 2011·7 cites·20 claims
- 0776US9001833B2Relay apparatus, reception apparatus, and communication systemFUJITSU LTD·Filed 2013·Granted Apr 7, 2015·4 cites·13 claims
- 0876US8451955B2Receiving apparatus, transmitting apparatus, reception method, and transmission methodSUGA JUNICHI·Filed 2012·Granted May 28, 2013·2 cites·5 claims
- 0976US8194584B2Base station device, wireless terminal, wireless communication management device, and wireless communication systemNAKATSUGAWA KEIICHI·Filed 2009·Granted Jun 5, 2012·6 cites·11 claims
- 1075US7512093B2QoS setup method and QoS setup system for use in mobile communication, and mobile terminal apparatus, home agent and server apparatus used for the QoS setup systemFUJITSU LTD·Filed 2005·Granted Mar 31, 2009·8 cites·18 claims
- 1174US8254501B2Receiving apparatus, transmitting apparatus, reception method, and transmission methodSUGA JUNICHI·Filed 2010·Granted Aug 28, 2012·2 cites·5 claims
- 1273US8089930B2Wireless communication control method and radio terminalNAKATSUGAWA KEIICHI·Filed 2008·Granted Jan 3, 2012·5 cites·19 claims
- 1373US8040842B2Radio communication systemFUJITSU LTD·Filed 2007·Granted Oct 18, 2011·5 cites·16 claims
- 1472US7711819B2Load balancerFUJITSU LTD·Filed 2002·Granted May 4, 2010·16 cites·10 claims
- 1571US8271010B2Wireless communication terminal and management device in a wireless communication system and method thereofNAKATSUGAWA KEIICHI·Filed 2010·Granted Sep 18, 2012·2 cites·10 claims
- 1670US7277708B2Router and mobile communication terminal for mobile communication networkFUJITSU LTD·Filed 2002·Granted Oct 2, 2007·14 cites·4 claims
- 1764US7436762B2Mobile communication network system for managing the location of a mobile IP terminalFUJITSU LTD·Filed 2003·Granted Oct 14, 2008·11 cites·6 claims
- 1862US8744461B2Transmitting apparatus and receiving apparatusNAKATSUGAWA KEIICHI·Filed 2011·Granted Jun 3, 2014·1 cites·10 claims
- 1962US8738016B2Scheduling method, wireless base station, and wireless terminalNAKATSUGAWA KEIICHI·Filed 2010·Granted May 27, 2014·1 cites·18 claims
- 2061US8937905B2Base station apparatus, wireless terminal, communication system and method for controlling communication systemNAKATSUGAWA KEIICHI·Filed 2012·Granted Jan 20, 2015·1 cites·11 claims
- 2155US7698436B2IP connection processing deviceFUJITSU LTD·Filed 2003·Granted Apr 13, 2010·5 cites·17 claims
- 2255US2008045145A1Radio Relay Communication Method, Radio Base Station, and Radio Relay Station in Radio Communication SystemFUJITSU LTD·Filed 2007·Application pending·0 cites
- 2352US8351458B2Method for allocating radio resources, radio base station, and mobile stationFUJITSU LTD·Filed 2009·Granted Jan 8, 2013·0 cites·15 claims
- 2451US7113509B2Node deviceFUJITSU LTD·Filed 2001·Granted Sep 26, 2006·1 cites·53 claims
- 2551US2023283570A1Resource allocation apparatus and allocating resource methodFUJITSU LTD·Filed 2022·Application pending·0 cites
- 2648US5083054APermanent magnet field type dc machineHITACHI LTD·Filed 1983·Granted Jan 21, 1992·11 cites·11 claims
- 2746US9641600B2System, method, computer-readable medium and apparatusFUJITSU LTD·Filed 2014·Granted May 2, 2017·0 cites·16 claims
- 2846US9439102B2Transmitting apparatus, transmission method, and transmission systemFUJITSU LTD·Filed 2013·Granted Sep 6, 2016·0 cites·11 claims
- 2945US9853857B2System, switch device and method of controlling a plurality of switch devicesFUJITSU LTD·Filed 2016·Granted Dec 26, 2017·0 cites·20 claims
- 3045US2009163144A1Communication Device, Terminal Device, And Method Of Managing Radio Channel QualityNAKATSUGAWA KEIICHI·Filed 2009·Application pending·0 cites
- 3144US2007223427A1Base station apparatus, terminal, and bandwidth control methodFUJITSU LTD·Filed 2006·Application pending·0 cites
- 3243US9781023B2Information processing device, information processing method, and recording mediumFUJITSU LTD·Filed 2013·Granted Oct 3, 2017·0 cites·11 claims
- 3342US10965542B2Management apparatus, management method and non-transitory computer-readable storage medium for storing management programFUJITSU LTD·Filed 2018·Granted Mar 30, 2021·0 cites·7 claims
- 3442US2004004967A1Mobile communication system, router, mobile node, and mobile communication methodFiled 2003·Application pending·0 cites
- 3542US2007047508A1Quality guarantee method for mobile terminal communicationFUJITSU LTD·Filed 2005·Application pending·0 cites
- 3642US2006209891A1Network QoS control system and methodFUJITSU LTD·Filed 2005·Application pending·0 cites
- 3741US10374875B2Resource management device, resource management system, and computer-readable recording mediumFUJITSU LTD·Filed 2017·Granted Aug 6, 2019·0 cites·5 claims
- 3841US2018175965A1Network control method, network control device, and storage mediumFUJITSU LTD·Filed 2017·Application pending·0 cites
- 3941US2007047507A1Home agent and mobile nodeFUJITSU LTD·Filed 2005·Application pending·0 cites
- 4040US8224344B2Parameter collecting method, wireless base station and relay stationNAKATSUGAWA KEIICHI·Filed 2010·Granted Jul 17, 2012·0 cites·17 claims
- 4140US2003225892A1Handover method in mobile communication system and router device used in mobile communication systemFiled 2003·Application pending·0 cites
- 4240US2003026241A1Packet transfer method for hierarchical packet network, hierarchical packet communication system, and gate node, edge node and mobile terminal for use with hierarchical packet communication system, as well as handover method and routing node for packet networkFiled 2001·Application pending·0 cites
- 4340US2002186679A1Mobile node supporting routerFiled 2001·Application pending·0 cites
- 4439US2017324669A1Control apparatus, data transmitting system, and method of data transmittingFUJITSU LTD·Filed 2017·Application pending·0 cites
- 4539US2012188873A1Communication system, communication method, receiving apparatus, and transmitting apparatusNAKATSUGAWA KEIICHI·Filed 2011·Application pending·0 cites
- 4637US9628324B2Openflow switch and failure recovery method in openflow networkFUJITSU LTD·Filed 2015·Granted Apr 18, 2017·0 cites·9 claims
- 4737US2017078222A1Control device and method of controlling a plurality of network switchesFUJITSU LTD·Filed 2016·Application pending·0 cites
- 4836US8412184B2Communication switching method in communication systemTAKUSAGAWA HIDEAKI·Filed 2008·Granted Apr 2, 2013·0 cites·14 claims
- 4935US2015281352A1Communication control device, storage device, and communication control methodFUJITSU LTD·Filed 2015·Application pending·0 cites
- 5034US2015319671A1Control apparatus, communication apparatus and control methodFUJITSU LTD·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →