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Toru Hoshi
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Yokohama, JP
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Patents Grants
last 30 patents
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Patent Grant
Communication system and communication method
Patent number
7,508,822
Issue date
Mar 24, 2009
Hitachi, Ltd.
Keiko Tanigawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system and communication method
Patent number
7,233,589
Issue date
Jun 19, 2007
Hitachi, Ltd.
Keiko Tanigawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Data gateway and method for relaying data
Patent number
6,618,368
Issue date
Sep 9, 2003
Hitachi, Ltd.
Keiko Tanigawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Communication system and communication method
Publication number
20080069315
Publication date
Mar 20, 2008
Hitachi, Ltd.
Keiko Tanigawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication system and communication method
Publication number
20040001480
Publication date
Jan 1, 2004
Keiko Tanigawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE