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Tatsuya Watanuki
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Ebina, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Relay device, network system and computer program product
Patent number
9,253,080
Issue date
Feb 2, 2016
Alaxala Networks Corporation
Yoshihiro Kaya
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Network relay system and control method thereof
Patent number
8,233,383
Issue date
Jul 31, 2012
Hitachi, Ltd.
Makoto Kitani
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
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
Network connection apparatus
Patent number
7,177,310
Issue date
Feb 13, 2007
Hitachi, Ltd.
Yukihide Inagaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Network apparatus and a method for communicating by using the netwo...
Patent number
7,046,624
Issue date
May 16, 2006
Hitachi, Ltd.
Kazuko Iwatsuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication management device and communication management method
Patent number
6,985,496
Issue date
Jan 10, 2006
Hitachi, Ltd.
Takahisa Miyamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Packet transmitting and receiving method and apparatus therefor
Patent number
6,977,885
Issue date
Dec 20, 2005
Hitachi, Ltd.
Tatsuya Watanuki
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
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
Method for sending notice of failure detection
Patent number
6,877,105
Issue date
Apr 5, 2005
Hitachi, Ltd.
Ken Watanabe
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
Information relay device and method with multicast protocol convers...
Patent number
6,853,639
Issue date
Feb 8, 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
Automatic address distributing system
Patent number
6,578,088
Issue date
Jun 10, 2003
Hitachi, Ltd.
Shuji Ohno
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Automatic address distributing system
Patent number
6,219,715
Issue date
Apr 17, 2001
Hitachi, Ltd.
Shuji Ohno
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
Congestion control method in asynchronous transfer mode local area...
Patent number
5,699,345
Issue date
Dec 16, 1997
Hitachi, Ltd.
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
RELAY DEVICE, NETWORK SYSTEM AND COMPUTER PROGRAM PRODUCT
Publication number
20120287937
Publication date
Nov 15, 2012
ALAXALA Networks Corporation
YOSHIHIRO KAYA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
NETWORK RELAY SYSTEM AND CONTROL METHOD THEREOF
Publication number
20090019130
Publication date
Jan 15, 2009
Hitachi, Ltd
Makoto KITANI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method for sending and receiving a data frame between at least two...
Publication number
20060015874
Publication date
Jan 19, 2006
Yoshitaka Sainomoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Network relay system and control method thereof
Publication number
20050276215
Publication date
Dec 15, 2005
Makoto Kitani
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
Network authentication apparatus and network authentication system
Publication number
20040213237
Publication date
Oct 28, 2004
Toshikazu Yasue
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Packet distributing system and method for distributing access packe...
Publication number
20030195919
Publication date
Oct 16, 2003
Tatsuya Watanuki
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
Network connection apparatus
Publication number
20020126680
Publication date
Sep 12, 2002
Yukihide Inagaki
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
Circuit multiplexing method and information relaying apparatus
Publication number
20020016874
Publication date
Feb 7, 2002
Tatsuya Watanuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method for sending and receiving a data frame between at least two...
Publication number
20010054109
Publication date
Dec 20, 2001
Yoshitaka Sainomoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication management device and communication management method
Publication number
20010027489
Publication date
Oct 4, 2001
Hitachi, Ltd.
Takahisa Miyamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Automatic address distributing system
Publication number
20010005858
Publication date
Jun 28, 2001
Shuji Ohno
H04 - ELECTRIC COMMUNICATION TECHNIQUE