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Junji Yamamoto
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Kawasaki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method and system for upgrading a fiber optics network
Patent number
8,233,800
Issue date
Jul 31, 2012
Fujitsu Limited
Larry Henry Steinhorst
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Diagnosis method for standby system of optical ring network
Patent number
7,418,203
Issue date
Aug 26, 2008
Fujitsu Limited
Masahiro Shioda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Network system
Patent number
6,891,793
Issue date
May 10, 2005
Fujitsu Limited
Hiroyuki Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Synchronization message reception processing apparatus
Patent number
6,222,892
Issue date
Apr 24, 2001
Fujitsu Limited
Yoshitaka Taki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Synchronization-message-based active reference switching unit
Patent number
6,014,414
Issue date
Jan 11, 2000
Fujitsu Limited
Junji Yamamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Synchronization message transmitting apparatus
Patent number
5,955,959
Issue date
Sep 21, 1999
Fujitsu Limited
Yoshitaka Taki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
WAVELENGTH DIVISION MULTIPLEXING APPARATUS AND DISPERSION COMPENSAT...
Publication number
20100247095
Publication date
Sep 30, 2010
FUJITSU LIMITED
Takehiro Fujita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Diagnosis method for standby system of optical ring network
Publication number
20050169629
Publication date
Aug 4, 2005
FUJITSU LIMITED
Masahiro Shioda
H04 - ELECTRIC COMMUNICATION TECHNIQUE