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Yukihisa Tamura
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Yokohama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Data transfer device and data transfer system
Patent number
8,831,040
Issue date
Sep 9, 2014
Hitachi, Ltd.
Tetsuya Nakajima
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Network system
Patent number
8,416,681
Issue date
Apr 9, 2013
Hitachi, Ltd.
Yukihisa Tamura
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Interface board and optical transmission equipment
Patent number
8,149,868
Issue date
Apr 3, 2012
Hitachi, Ltd.
Hidemasa Narita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
DATA TRANSFER DEVICE AND DATA TRANSFER SYSTEM
Publication number
20110216782
Publication date
Sep 8, 2011
Hitachi, Ltd.
TETSUYA NAKAJIMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
NETWORK SYSTEM
Publication number
20110214008
Publication date
Sep 1, 2011
Hitachi, Ltd.
YUKIHISA TAMURA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
OPERATION AND CONSTRUCTION METHOD OF NETWORK USING MULTI-RATE INTER...
Publication number
20110164622
Publication date
Jul 7, 2011
Yukihisa TAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
NETWORK SYSTEM
Publication number
20100226370
Publication date
Sep 9, 2010
Hitachi, Ltd.
Yukihisa TAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Operation and construction method of network using multi-rate inter...
Publication number
20090028548
Publication date
Jan 29, 2009
Yukihisa Tamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
INTERFACE BOARD AND OPTICAL TRANSMISSION EQUIPMENT
Publication number
20080232818
Publication date
Sep 25, 2008
Hidemasa Narita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MULTIPLEXED OPTICAL SIGNAL TRANSMISSION APPARATUS
Publication number
20080225882
Publication date
Sep 18, 2008
Toshiyuki ATSUMI
H04 - ELECTRIC COMMUNICATION TECHNIQUE