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Kawasaki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Clock recovery circuit, optical module, and clock recovery method
Patent number
9,774,334
Issue date
Sep 26, 2017
Fujitsu Limited
Satoshi Ide
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Signal decision circuit, optical receiver, and signal decision method
Patent number
9,647,772
Issue date
May 9, 2017
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Light emitting element drive circuit
Patent number
9,570,917
Issue date
Feb 14, 2017
Fujitsu Limited
Mariko Kase
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Receiver circuit
Patent number
9,525,386
Issue date
Dec 20, 2016
Fujitsu Limited
Satoshi Ide
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Driving circuit having a dummy load connected to one output node of...
Patent number
9,161,403
Issue date
Oct 13, 2015
Fujitsu Limited
Mariko Sugawara
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Optical transmission system, control signal transmission method, an...
Patent number
9,088,366
Issue date
Jul 21, 2015
Fujitsu Limited
Jun Matsui
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission apparatus and optical transmission method
Patent number
9,083,467
Issue date
Jul 14, 2015
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical receiving circuit
Patent number
9,025,971
Issue date
May 5, 2015
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical receiving device, optical receiving circuit, and method for...
Patent number
8,478,138
Issue date
Jul 2, 2013
Fujitsu Limited
Mariko Sugawara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication terminal apparatus, communication apparatus, and sign...
Patent number
8,422,612
Issue date
Apr 16, 2013
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Data receiver circuit
Patent number
8,396,171
Issue date
Mar 12, 2013
Fujitsu Limited
Tetsuji Yamabana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical communication apparatus and optical communication method
Patent number
8,311,418
Issue date
Nov 13, 2012
Fujitsu Optical Components Limited
Yukito Tsunoda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical receiver
Patent number
8,306,437
Issue date
Nov 6, 2012
Fujitsu Limited
Yukito Tsunoda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Light modulation device
Patent number
8,184,355
Issue date
May 22, 2012
Fujitsu Limited
Yukito Tsunoda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical switch controller and movable body controller
Patent number
8,083,361
Issue date
Dec 27, 2011
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication terminal apparatus and signal receiving method
Patent number
7,885,290
Issue date
Feb 8, 2011
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multilevel optical phase modulator
Patent number
7,876,491
Issue date
Jan 25, 2011
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal detecting apparatus, signal receiving apparatus, and signal...
Patent number
7,863,939
Issue date
Jan 4, 2011
Fujitsu Limited
Tetsuji Yamabana
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Optical receiver for regeneration of optical signal
Patent number
7,809,286
Issue date
Oct 5, 2010
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical reception circuit and identification level controlling meth...
Patent number
7,720,394
Issue date
May 18, 2010
Fujitsu Limited
Ken-ichi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal-level detecting apparatus, optical receiver, and signal-leve...
Patent number
7,683,676
Issue date
Mar 23, 2010
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical power monitor for PON telecommunication
Patent number
7,676,152
Issue date
Mar 9, 2010
Fujitsu Limited
Tetsuji Yamabana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical switch controller and movable body controller
Patent number
7,670,015
Issue date
Mar 2, 2010
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wavelength selective switch module
Patent number
7,440,649
Issue date
Oct 21, 2008
Fujitsu Limited
Yoshio Sakai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical module having gain member and partial reflection section wa...
Patent number
7,437,037
Issue date
Oct 14, 2008
Fujitsu Limited
Yukito Tsunoda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Signal amplification device
Patent number
7,382,166
Issue date
Jun 3, 2008
Fujitsu Limited
Satoshi Ide
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Optical wavelength switch having planar lightwave circuit structure
Patent number
7,349,593
Issue date
Mar 25, 2008
Fujitsu Limited
Hidehiko Nakata
G02 - OPTICS
Information
Patent Grant
Light receiving device for optical communication system
Patent number
7,196,310
Issue date
Mar 27, 2007
Fujitsu Limited
Ken-ichi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical waveguide and fabricating method thereof
Patent number
7,103,252
Issue date
Sep 5, 2006
Fujitsu Limited
Satoshi Ide
G02 - OPTICS
Information
Patent Grant
Optical wavelength switch having planar lightwave circuit structure
Patent number
7,095,918
Issue date
Aug 22, 2006
Fujitsu Limited
Hidehiko Nakata
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL DEVICE AND OPTICAL TRANSCEIVER
Publication number
20250052964
Publication date
Feb 13, 2025
FUJITSU OPTICAL COMPONENTS LIMITED
Yamato IWAMA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CLOCK RECOVERY CIRCUIT, OPTICAL MODULE, AND CLOCK RECOVERY METHOD
Publication number
20170104492
Publication date
Apr 13, 2017
Fujitsu Limited
Satoshi IDE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL DECISION CIRCUIT, OPTICAL RECEIVER, AND SIGNAL DECISION METHOD
Publication number
20160301480
Publication date
Oct 13, 2016
Fujitsu Limited
Satoshi IDE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RECEIVER CIRCUIT
Publication number
20150311871
Publication date
Oct 29, 2015
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL RECEIVING CIRCUIT
Publication number
20140193164
Publication date
Jul 10, 2014
Fujitsu Limited
Satoshi IDE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
LIGHT EMITTING ELEMENT DRIVE CIRCUIT
Publication number
20140103719
Publication date
Apr 17, 2014
Fujitsu Limited
Mariko Kase
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, CONTROL SIGNAL TRANSMISSION METHOD, AN...
Publication number
20140056595
Publication date
Feb 27, 2014
FUJITSU LIMITED
Jun MATSUI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION APPARATUS AND OPTICAL TRANSMISSION METHOD
Publication number
20130183032
Publication date
Jul 18, 2013
FUJITSU LIMITED
Satoshi IDE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL RECEIVER
Publication number
20130071106
Publication date
Mar 21, 2013
Fujitsu Limited
Yukito TSUNODA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
DRIVING CIRCUIT
Publication number
20120062143
Publication date
Mar 15, 2012
FUJITSU LIMITED
Mariko SUGAWARA
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
DATA RECEIVER CIRCUIT
Publication number
20110293047
Publication date
Dec 1, 2011
FUJITSU LIMITED
Tetsuji Yamabana
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DIRECT-CURRENT POTENTIAL GENERATION CIRCUIT, MULTISTAGE CIRCUIT AND...
Publication number
20100176877
Publication date
Jul 15, 2010
FUJITSU LIMITED
Mariko SUGAWARA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Optical communication apparatus and optical communication method
Publication number
20100158541
Publication date
Jun 24, 2010
FUJITSU OPTICAL COMPONENTS LIMITED
Yukito Tsunoda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL RECEIVING DEVICE, OPTICAL RECEIVING CIRCUIT, AND METHOD FOR...
Publication number
20100135678
Publication date
Jun 3, 2010
FUJITSU LIMITED
Mariko SUGAWARA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical switch controller and movable body controller
Publication number
20100103493
Publication date
Apr 29, 2010
FUJITSU LIMITED
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Signal detecting apparatus, signal receiving apparatus, and signal...
Publication number
20090289664
Publication date
Nov 26, 2009
FUJITSU LIMITED
Tetsuji Yamabana
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
PHASE-MODULATED SIGNAL RECEIVING DEVICE
Publication number
20090252505
Publication date
Oct 8, 2009
FUJITSU LIMITED
Koji TERADA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical receiver
Publication number
20090238582
Publication date
Sep 24, 2009
FUJITSU LIMITED
Yukito TSUNODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL RECEIVER FOR REGENERATION OF OPTICAL SIGNAL
Publication number
20090232519
Publication date
Sep 17, 2009
FUJITSU LIMITED
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION TERMINAL APPARATUS, COMMUNICATION APPARATUS, AND SIGN...
Publication number
20090225914
Publication date
Sep 10, 2009
FUJITSU LIMITED
Satoshi IDE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication terminal apparatus and signal receiving method
Publication number
20090175295
Publication date
Jul 9, 2009
FUJITSU LIMITED
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL RECEIVING APPARATUS, OPTICAL LINE TERMINAL APPARATUS, AND O...
Publication number
20090142074
Publication date
Jun 4, 2009
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Light modulation device
Publication number
20090141333
Publication date
Jun 4, 2009
FUJITSU LIMITED
Yukito TSUNODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MULTILEVEL OPTICAL PHASE MODULATOR
Publication number
20090086303
Publication date
Apr 2, 2009
FUJITSU LIMITED
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL AMPLIFICATION DEVICE
Publication number
20080122539
Publication date
May 29, 2008
FUJITSU LIMITED
Satoshi Ide
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Wavelength selective switch module
Publication number
20080050065
Publication date
Feb 28, 2008
FUJITSU LIMITED
Yoshio Sakai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Signal-level detecting apparatus, optical receiver, and signal-leve...
Publication number
20080042735
Publication date
Feb 21, 2008
Fujitsu Limited
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical reception circuit and identification level controlling meth...
Publication number
20080031638
Publication date
Feb 7, 2008
FUJITSU LIMITED
Ken-ichi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical switch controller and movable body controller
Publication number
20080013143
Publication date
Jan 17, 2008
FUJITSU LIMITED
Satoshi Ide
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical power monitor for PON telecommunication
Publication number
20080002973
Publication date
Jan 3, 2008
FUJITSU LIMITED
Tetsuji Yamabana
H04 - ELECTRIC COMMUNICATION TECHNIQUE