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Takatoshi Okagawa
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Mobile communication method, mobility management node, packet switc...
Patent number
9,326,180
Issue date
Apr 26, 2016
NTT DoCoMo, Inc.
Itsuma Tanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile communication network system and a mobility managing unit
Patent number
8,611,892
Issue date
Dec 17, 2013
NTT DoCoMo, Inc.
Atsushi Iwasaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication control system, communication control method, routing...
Patent number
8,135,005
Issue date
Mar 13, 2012
NTT DoCoMo, Inc.
Takatoshi Okagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Packet switching system, packet switching method, routing apparatus...
Patent number
7,826,461
Issue date
Nov 2, 2010
NTT DoCoMo, Inc.
Takatoshi Okagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Controlling handover between different packet networks by using com...
Patent number
7,751,819
Issue date
Jul 6, 2010
NTT DoCoMo, Inc.
Shin-ichi Isobe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system, communication terminal, routing control metho...
Patent number
7,715,346
Issue date
May 11, 2010
NTT DoCoMo, Inc.
Takayuki Ohbayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system, communication terminal, routing control metho...
Patent number
7,548,524
Issue date
Jun 16, 2009
NTT DoCoMo, Inc.
Takayuki Ohbayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile communication system, access router, management device and m...
Patent number
7,545,785
Issue date
Jun 9, 2009
NTT DoCoMo, Inc.
Katsutoshi Nishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Routing control system, routing control device, and routing control...
Patent number
7,535,896
Issue date
May 19, 2009
NTT DoCoMo, Inc.
Manhee Jo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Router and address identification information management server
Patent number
7,526,569
Issue date
Apr 28, 2009
NTT DoCoMo, Inc.
Katsutoshi Nishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile communication control system, mobile communication control m...
Patent number
7,466,674
Issue date
Dec 16, 2008
NTT DoCoMo, Inc.
Takatoshi Okagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Path control device and path control method
Patent number
7,417,969
Issue date
Aug 26, 2008
NTT DoCoMo, Inc.
Manhee Jo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Router, terminal apparatus, communication system and routing method
Patent number
7,408,879
Issue date
Aug 5, 2008
NTT DoCoMo, Inc.
Manhee Jo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system, address management method, relay device, and...
Patent number
7,324,490
Issue date
Jan 29, 2008
NTT DoCoMo, Inc.
Katsutoshi Nishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile communication network and data delivery method in mobile com...
Patent number
6,958,988
Issue date
Oct 25, 2005
NTT DoCoMo, Inc.
Takatoshi Okagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
MOBILE COMMUNICATION METHOD, MOBILITY MANAGEMENT NODE, PACKET SWITC...
Publication number
20140254363
Publication date
Sep 11, 2014
NTT DoCoMo, Inc.
Itsuma Tanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND APPARATUS FOR ROUTING A PACKET IN MOBILE IP SYSTEM
Publication number
20100098022
Publication date
Apr 22, 2010
Csaba Keszei
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM, COMMUNICATION TERMINAL, ROUTING CONTROL METHO...
Publication number
20090225724
Publication date
Sep 10, 2009
NTT DoCoMo, Inc.
Takayuki Ohbayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PACKET SWITCHING SYSTEM, PACKET SWITCHING METHOD, ROUTING APPARATUS...
Publication number
20080013549
Publication date
Jan 17, 2008
NTT DoCoMo, Inc.
Takatoshi Okagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PACKET COMMUNICATIONS SYSTEM AND TRANSFER DEVICE
Publication number
20070291754
Publication date
Dec 20, 2007
NTT DoCoMo, Inc.
Takatoshi Okagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile control system, mobile control method, mobile control device...
Publication number
20060068847
Publication date
Mar 30, 2006
NTT DoCoMo, Inc.
Kenji Nishimura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile communication system, handover controller, and handover cont...
Publication number
20060052107
Publication date
Mar 9, 2006
NTT DoCoMo, Inc.
Shin-ichi Isobe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile communication system, mobile communication method, server de...
Publication number
20060045036
Publication date
Mar 2, 2006
NTT DoCoMo, Inc.
Shinichi Isobe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile communication system, access router, management device and m...
Publication number
20050271015
Publication date
Dec 8, 2005
NTT DoCoMo, Inc.
Katsutoshi Nishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile communication network system and a mobility managing unit
Publication number
20050201344
Publication date
Sep 15, 2005
NTT DoCoMo, Inc.
Atsushi Iwasaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Address dynamic assignment system, relay apparatus, address managem...
Publication number
20050185625
Publication date
Aug 25, 2005
NTT DoCoMo, Inc.
Takuji Sakaguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication system and communication control method
Publication number
20050083905
Publication date
Apr 21, 2005
Katsutoshi Nishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication system, communication terminal, routing control metho...
Publication number
20050053011
Publication date
Mar 10, 2005
NTT DoCoMo, Inc.
Takayuki Ohbayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Router and address indentification information management server
Publication number
20050010686
Publication date
Jan 13, 2005
NTT DoCoMo, Inc.
Katsutoshi Nishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication system, address management method, relay device, and...
Publication number
20040240393
Publication date
Dec 2, 2004
Katsutoshi Nishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Path control device and path control method
Publication number
20040146046
Publication date
Jul 29, 2004
NTT DoCoMo, Inc.
Manhee Jo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Routing control device and method of generating routing control inf...
Publication number
20040141465
Publication date
Jul 22, 2004
NTT DoCoMo, Inc.
Manhee Jo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Routing control system, routing control device, and routing control...
Publication number
20040136357
Publication date
Jul 15, 2004
NTT DoCoMo, Inc.
Manhee Jo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication control system, communication control method, routing...
Publication number
20040090963
Publication date
May 13, 2004
NTT DoCoMo, Inc.
Takatoshi Okagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Routing control system, routing control device, transfer device and...
Publication number
20040068580
Publication date
Apr 8, 2004
NTT DoCoMo, Inc.
Manhee Jo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile communication control system, mobile communication control m...
Publication number
20040058683
Publication date
Mar 25, 2004
NTT DoCoMo, Inc.
Takatoshi Okagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Packet communications system and transfer device
Publication number
20030161319
Publication date
Aug 28, 2003
NTT DoCoMo, Inc.
Takatoshi Okagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Packet switching system, packet switching method, routing apparatus...
Publication number
20030142679
Publication date
Jul 31, 2003
NTT DoCoMo, Inc.
Takatoshi Okagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Router, terminal apparatus, communication system and routing method
Publication number
20030112753
Publication date
Jun 19, 2003
NTT DoCoMo, Inc.
Manhee Jo
H04 - ELECTRIC COMMUNICATION TECHNIQUE