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Yokohama, JP
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last 30 patents
Information
Patent Grant
Multicast routing method and apparatus for routing multicast packet
Patent number
7,860,094
Issue date
Dec 28, 2010
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile node, mobile agent and network system
Patent number
7,643,447
Issue date
Jan 5, 2010
Hitachi, Ltd.
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multicast communication method
Patent number
7,583,698
Issue date
Sep 1, 2009
Hitachi, Ltd.
Hidemitsu Higuchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multicast routing method and apparatus for routing multicast packet
Patent number
7,502,372
Issue date
Mar 10, 2009
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile node, mobile agent and network system
Patent number
7,453,905
Issue date
Nov 18, 2008
Hitachi, Ltd.
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multicast routing method and apparatus for routing multicast packet
Patent number
7,403,520
Issue date
Jul 22, 2008
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multicast routing method and apparatus for routing multicast packet
Patent number
7,403,522
Issue date
Jul 22, 2008
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multicast routing method and an apparatus for routing a multicast p...
Patent number
7,400,645
Issue date
Jul 15, 2008
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multicast routing method and an apparatus for routing a multicast p...
Patent number
7,400,646
Issue date
Jul 15, 2008
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Address autoconfiguration method for home network
Patent number
7,266,090
Issue date
Sep 4, 2007
Hitachi, Ltd.
Sunao Sawada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multicast routing method and apparatus for routing multicast packet
Patent number
7,158,514
Issue date
Jan 2, 2007
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multicast communication method
Patent number
7,012,931
Issue date
Mar 14, 2006
Hitachi, Ltd.
Hidemitsu Higuchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Network relay apparatus
Patent number
6,950,431
Issue date
Sep 27, 2005
Hitachi, Ltd.
Shinji Nozaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication apparatus for routing or discarding a packet sent fro...
Patent number
6,907,470
Issue date
Jun 14, 2005
Hitachi, Ltd.
Sunao Sawada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multicast routing method and an apparatus for routing a multicast p...
Patent number
6,907,037
Issue date
Jun 14, 2005
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile node, mobile agent and network system
Patent number
6,888,845
Issue date
May 3, 2005
Hitachi, Ltd.
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile node, mobile agent-and network system
Patent number
6,868,089
Issue date
Mar 15, 2005
Hitachi, Ltd.
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile node, mobile agent and network system
Patent number
6,785,293
Issue date
Aug 31, 2004
Hitachi, Ltd.
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile node, mobile agent and network system
Patent number
6,724,775
Issue date
Apr 20, 2004
Hitachi, Ltd.
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Server address management system
Patent number
6,311,208
Issue date
Oct 30, 2001
Hitachi, Ltd.
Takahisa Miyamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile node, mobile agent and network system
Patent number
6,172,986
Issue date
Jan 9, 2001
Hitachi, Ltd.
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Service management method and connection oriented network system us...
Patent number
6,101,542
Issue date
Aug 8, 2000
Hitachi, Ltd.
Takahisa Miyamoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Server address management system
Patent number
6,014,753
Issue date
Jan 11, 2000
Hitachi, Ltd.
Takahisa Miyamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
MOBILE NODE, MOBILE AGENT AND NETWORK SYSTEM
Publication number
20090046635
Publication date
Feb 19, 2009
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MULTICAST ROUTING METHOD AND APPARATUS FOR ROUTING MULTICAST PACKET
Publication number
20090016345
Publication date
Jan 15, 2009
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Information processing apparatus, media player and method for contr...
Publication number
20070136522
Publication date
Jun 14, 2007
Masaya Umemura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multicast routing method and apparatus for routing multicast packet
Publication number
20060274751
Publication date
Dec 7, 2006
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multicast communication method
Publication number
20050249213
Publication date
Nov 10, 2005
Hitachi, Ltd.
Hidemitsu Higuchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile node, mobile agent and network system
Publication number
20050190713
Publication date
Sep 1, 2005
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Address autoconfiguration method for home network
Publication number
20040028061
Publication date
Feb 12, 2004
Hitachi, Ltd
Sunao Sawada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multicast routing method and apparatus for routing multicast packet
Publication number
20020181465
Publication date
Dec 5, 2002
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multicast routing method and apparatus for routing multicast packet
Publication number
20020181464
Publication date
Dec 5, 2002
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multicast routing method and apparatus for routing multicast packet
Publication number
20020176420
Publication date
Nov 28, 2002
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile node, mobile agent and network system
Publication number
20020159479
Publication date
Oct 31, 2002
Hitachi, Ltd.
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile node, mobile agent and network system
Publication number
20020159478
Publication date
Oct 31, 2002
Hitachi, Ltd.
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile node, mobile agent and network system
Publication number
20020159465
Publication date
Oct 31, 2002
Hitachi, Ltd.
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multicast routing method and an apparatus for routing a multicast p...
Publication number
20020093960
Publication date
Jul 18, 2002
Hitachi, Ltd.
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multicast routing method and an apparatus for routing a multicast p...
Publication number
20020090002
Publication date
Jul 11, 2002
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multicast routing method and an apparatus for routing a multicast p...
Publication number
20020031130
Publication date
Mar 14, 2002
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multicast routing method and apparatus for routing multicast packet
Publication number
20020021697
Publication date
Feb 21, 2002
Kazuaki Tsuchiya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication apparatus for routing or discarding a packet sent fro...
Publication number
20020016858
Publication date
Feb 7, 2002
Sunao Sawada
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multicast communication method
Publication number
20010053156
Publication date
Dec 20, 2001
Hidemitsu Higuchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE