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Yoshitaka Taki
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Kawasaki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical transmission system, wavelength control method and node
Patent number
9,667,346
Issue date
May 30, 2017
Fujitsu Limited
Hirofumi Araki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmission apparatus, reception apparatus, transmission method, a...
Patent number
9,191,137
Issue date
Nov 17, 2015
Fujitsu Limited
Yoshitaka Taki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Path status monitoring method and device
Patent number
7,830,808
Issue date
Nov 9, 2010
Fujitsu Limited
Osamu Takeuchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmitter with cell switching function
Patent number
6,498,794
Issue date
Dec 24, 2002
Fujitsu Limited
Keiichiro Tsukamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for path trace check
Patent number
6,226,270
Issue date
May 1, 2001
Fujitsu Limited
Isao Chiku
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
Information
Patent Grant
Transmission quality monitoring system for a digital communication...
Patent number
5,706,280
Issue date
Jan 6, 1998
Fujitsu Limited
Toru Kosugi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Frequency synchronous circuit for reducing transition period from p...
Patent number
5,461,345
Issue date
Oct 24, 1995
Fujitsu Limited
Yoshitaka Taki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Frequency synchronous circuit for obtaining original clock signal b...
Patent number
5,459,435
Issue date
Oct 17, 1995
Fujitsu Limited
Yoshitaka Taki
H03 - BASIC ELECTRONIC CIRCUITRY
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, WAVELENGTH CONTROL METHOD AND NODE
Publication number
20160204875
Publication date
Jul 14, 2016
Fujitsu Limited
Hirofumi Araki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSMISSION SYSTEM, TRANSMISSION DEVICE, AND TRANSMISSION METHOD
Publication number
20160142300
Publication date
May 19, 2016
Fujitsu Limited
Hirofumi Araki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSMISSION APPARATUS, RECEPTION APPARATUS, TRANSMISSION METHOD, A...
Publication number
20130028613
Publication date
Jan 31, 2013
Fujitsu Limited
Yoshitaka TAKI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Path status monitoring method and device
Publication number
20080159156
Publication date
Jul 3, 2008
Fujitsu Limited
Osamu Takeuchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE