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Toshiyuki ATSUMI
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Yokohama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Transmission device
Patent number
8,306,066
Issue date
Nov 6, 2012
Hitachi, Ltd.
Masatoshi Shibasaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
Information
Patent Grant
Transmission apparatus
Patent number
7,916,756
Issue date
Mar 29, 2011
Hitachi, Ltd.
Toshiyuki Atsumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical cross connect apparatus and network
Patent number
7,756,045
Issue date
Jul 13, 2010
Hitachi, Ltd.
Toshiyuki Atsumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical cross connect apparatus and network
Patent number
7,433,371
Issue date
Oct 7, 2008
Hitachi Communication Technologies, Ltd.
Toshiyuki Atsumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for optical network administration
Patent number
7,139,479
Issue date
Nov 21, 2006
Hitachi, Ltd.
Masaki Ohira
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
TRANSMISSION DEVICE AND INTERFACE DEVICE
Publication number
20160205046
Publication date
Jul 14, 2016
Hitachi, Ltd
Toshiyuki ATSUMI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSMISSION DEVICE AND INTERFACE DEVICE
Publication number
20130142198
Publication date
Jun 6, 2013
Hitachi, Ltd
Toshiyuki ATSUMI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
TRANSMISSION APPARATUS, TRANSMISSION SYSTEM AND FAILURE DETECTION M...
Publication number
20110058807
Publication date
Mar 10, 2011
Hitachi, Ltd
Rei SUZUKI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM
Publication number
20100271955
Publication date
Oct 28, 2010
Hitachi, Ltd
Toshiyuki ATSUMI
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
TRANSMISSION DEVICE
Publication number
20100111111
Publication date
May 6, 2010
Hitachi, Ltd.
Masatoshi SHIBASAKI
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
Optical Cross Connect Apparatus and Network
Publication number
20090022059
Publication date
Jan 22, 2009
Hitachi Communication Technologies, Ltd.
Toshiyuki ATSUMI
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
Information
Patent Application
Transmission apparatus
Publication number
20070116055
Publication date
May 24, 2007
Toshiyuki Atsumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical cross connect apparatus and network
Publication number
20050185958
Publication date
Aug 25, 2005
Hitachi Communication Technologies, Inc.
Toshiyuki Atsumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method and apparatus for optical network administration
Publication number
20020131101
Publication date
Sep 19, 2002
HITACHI, LTD.
Masaki Ohira
H04 - ELECTRIC COMMUNICATION TECHNIQUE