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Mariko Yamada
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Server, VPN client, VPN system, and software
Patent number
7,725,707
Issue date
May 25, 2010
Hitachi, Ltd.
Mariko Yamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication equipment
Patent number
7,724,688
Issue date
May 25, 2010
Hitachi, Ltd.
Mariko Yamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Packet forwarding apparatus and communication network suitable for...
Patent number
7,656,872
Issue date
Feb 2, 2010
Hitachi Communication Technologies, Ltd.
Tetsuro Yoshimoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile node, server, and communication system
Patent number
7,496,071
Issue date
Feb 24, 2009
Hitachi Communication Technologies, Ltd.
Mariko Yamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Packet communication system, communication network, and method for...
Patent number
7,298,720
Issue date
Nov 20, 2007
Hitachi, Ltd.
Mariko Yamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Communication equipment
Publication number
20070237159
Publication date
Oct 11, 2007
Mariko Yamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication control unit
Publication number
20070153773
Publication date
Jul 5, 2007
Tatsuhiko Miyata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Router and communication system
Publication number
20070127461
Publication date
Jun 7, 2007
Hitachi Communication Technologies, Ltd.
Mariko Yamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Packet forwarding apparatus and communication network suitable for...
Publication number
20060120374
Publication date
Jun 8, 2006
Hitachi Communication Technologies, Ltd.
Tetsuro Yoshimoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Server, VPN client, VPN system, and software
Publication number
20060070115
Publication date
Mar 30, 2006
Hitachi Communication Technologies, Ltd.
Mariko Yamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile node, server, and communication system
Publication number
20060018273
Publication date
Jan 26, 2006
Hitachi Communication Technologies, Ltd.
Mariko Yamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Server, software, and system for data delivery
Publication number
20050157727
Publication date
Jul 21, 2005
Hitachi, Ltd.
Akira Date
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Packet communication system, communication network, and method for...
Publication number
20040176095
Publication date
Sep 9, 2004
Hitachi, Ltd.
Mariko Yamada
H04 - ELECTRIC COMMUNICATION TECHNIQUE