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Yuichiro Katsu
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Fujisawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Communication system and method, and gateway
Patent number
8,400,983
Issue date
Mar 19, 2013
Hitachi, Ltd.
Hiroto Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system and access gateway apparatus
Patent number
8,238,356
Issue date
Aug 7, 2012
Hitachi, Ltd.
Hitomi Nakamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Radio access terminal, base station controller, and handoff control...
Patent number
8,160,587
Issue date
Apr 17, 2012
Hitachi, Ltd.
Dan Xu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Base station apparatus, mobile station, and contents provider
Patent number
7,561,557
Issue date
Jul 14, 2009
Hitachi, Ltd.
Masao Hayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Base station apparatus, mobile station, and contents provider
Patent number
7,006,484
Issue date
Feb 28, 2006
Hitachi, Ltd.
Masao Hayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
COMMUNICATION SYSTEM AND METHOD, AND GATEWAY
Publication number
20110280215
Publication date
Nov 17, 2011
Hitachi, Ltd.
HIROTO NAKAGAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM AND ACCESS GATEWAY APPARATUS
Publication number
20100020812
Publication date
Jan 28, 2010
Hitachi, Ltd.
Hitomi NAKAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RADIO ACCESS TERMINAL, BASE STATION CONTROLLER, AND HANDOFF CONTROL...
Publication number
20090264134
Publication date
Oct 22, 2009
Dan Xu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method of setting up quality of service in wireless communication n...
Publication number
20070086384
Publication date
Apr 19, 2007
Yuichiro Katsu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Base station apparatus, mobile station, and contents provider
Publication number
20060072519
Publication date
Apr 6, 2006
Masao Hayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Base station apparatus, mobile station, and contents provider
Publication number
20020003787
Publication date
Jan 10, 2002
Masao Hayama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Geographic information output system
Publication number
20010027375
Publication date
Oct 4, 2001
Hitachi, Ltd.
Yoshiyuki Machida
G01 - MEASURING TESTING