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Atsugi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Signal processing circuit and optical receiving device
Patent number
10,560,199
Issue date
Feb 11, 2020
Fujitsu Limited
Yuya Imoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Amplitude adjustment circuit, digital coherent receiver, and amplit...
Patent number
10,177,855
Issue date
Jan 8, 2019
Fujitsu Limited
Masashi Sato
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Adaptive equalization circuit, digital coherent receiver, and adapt...
Patent number
9,680,667
Issue date
Jun 13, 2017
Fujitsu Limited
Daisuke Sasaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal processing apparatus, signal processing method, and signal p...
Patent number
9,660,733
Issue date
May 23, 2017
Fujitsu Limited
Masashi Sato
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Optical receiving device
Patent number
9,374,170
Issue date
Jun 21, 2016
Fujitsu Limited
Masato Oota
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wiring inspection apparatus and wiring inspection method
Patent number
8,875,085
Issue date
Oct 28, 2014
Fujitsu Limited
Akiko Furuya
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Wiring inspection apparatus and wiring inspection method
Patent number
8,869,092
Issue date
Oct 21, 2014
Fujitsu Limited
Akiko Furuya
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Apparatus and program for arctangent calculation
Patent number
8,549,056
Issue date
Oct 1, 2013
Fujitsu Limited
Masato Oota
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Optical amplification device
Patent number
7,417,792
Issue date
Aug 26, 2008
Fujitsu Limited
Kazuhiko Hatae
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Controlling apparatus for optical amplifier and controlling method...
Patent number
7,388,711
Issue date
Jun 17, 2008
Fujitsu Limited
Masato Oota
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Controlling apparatus for optical amplifier and controlling method...
Patent number
7,158,290
Issue date
Jan 2, 2007
Fujitsu Limited
Masato Oota
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
SIGNAL PROCESSING CIRCUIT AND OPTICAL RECEIVING DEVICE
Publication number
20190280779
Publication date
Sep 12, 2019
Fujitsu Limited
Yuya IMOTO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
AMPLITUDE ADJUSTMENT CIRCUIT, DIGITAL COHERENT RECEIVER, AND AMPLIT...
Publication number
20180123701
Publication date
May 3, 2018
Fujitsu Limited
Masashi Sato
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMITTER, OPTICAL TRANSMISSION DEVICE, AND MAPPING METHOD
Publication number
20170250757
Publication date
Aug 31, 2017
Fujitsu Limited
Shuhei HATAE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMITTER, OPTICAL TRANSMISSION DEVICE, AND TRANSMISSION...
Publication number
20170250759
Publication date
Aug 31, 2017
Fujitsu Limited
Shuhei HATAE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ADAPTIVE EQUALIZATION CIRCUIT, DIGITAL COHERENT RECEIVER, AND ADAPT...
Publication number
20170012803
Publication date
Jan 12, 2017
Fujitsu Limited
Daisuke SASAKI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND SIGNAL P...
Publication number
20160134261
Publication date
May 12, 2016
Fujitsu Limited
Masashi Sato
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
OPTICAL RECEIVING DEVICE
Publication number
20150180586
Publication date
Jun 25, 2015
Fujitsu Limited
Masato OOTA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRING INSPECTION APPARATUS AND WIRING INSPECTION METHOD
Publication number
20140289689
Publication date
Sep 25, 2014
Fujitsu Limited
Akiko FURUYA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
WIRING INSPECTION APPARATUS AND WIRING INSPECTION METHOD
Publication number
20140289696
Publication date
Sep 25, 2014
Fujitsu Limited
Akiko FURUYA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
APPARATUS AND PROGRAM FOR ARCTANGENT CALCULATION
Publication number
20110004645
Publication date
Jan 6, 2011
Fujitsu Limited
Masato OOTA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Controlling apparatus for optical amplifier and controlling method...
Publication number
20070070492
Publication date
Mar 29, 2007
Fujitsu Limited
Masato Oota
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical amplification device
Publication number
20050157380
Publication date
Jul 21, 2005
FUJITSU LIMITED
Kazuhiko Hatae
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Controlling apparatus for optical amplifier and controlling method...
Publication number
20050116147
Publication date
Jun 2, 2005
FUJITSU LIMITED
Masato Oota
H04 - ELECTRIC COMMUNICATION TECHNIQUE