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Hiroshi Nakamoto
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Kawasaki-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical transmission apparatus and optical transmission method
Patent number
9,331,808
Issue date
May 3, 2016
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system, dispersion slope imparting section, and metho...
Patent number
9,002,211
Issue date
Apr 7, 2015
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system, transmitter, receiver and method
Patent number
8,737,840
Issue date
May 27, 2014
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Polarization fluctuation compensation device and optical communicat...
Patent number
8,731,411
Issue date
May 20, 2014
Fujitsu Limited
Shoichiro Oda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmitter and optical transmission system
Patent number
8,693,887
Issue date
Apr 8, 2014
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system
Patent number
8,270,843
Issue date
Sep 18, 2012
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmitting apparatus and optical communication system
Patent number
8,155,533
Issue date
Apr 10, 2012
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
WDM optical transmission system and WDM optical transmission method
Patent number
7,796,897
Issue date
Sep 14, 2010
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical wavelength controlling method and a system thereof
Patent number
7,725,033
Issue date
May 25, 2010
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical demultiplexing method and optical multiplexing method, and...
Patent number
7,519,296
Issue date
Apr 14, 2009
Fujitsu Limited
Akira Miura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Quality monitoring method and apparatus for wavelength division mul...
Patent number
7,400,830
Issue date
Jul 15, 2008
Fujitsu Limited
Kenichi Torii
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Raman amplifier utilizing pump modulation for expanding gain band w...
Patent number
7,379,233
Issue date
May 27, 2008
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus and method of compensating transmission property of light...
Patent number
7,266,264
Issue date
Sep 4, 2007
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission apparatus and method which adjust rise and fal...
Patent number
7,020,399
Issue date
Mar 28, 2006
Fujitsu Limited
Hideyuki Miyata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission method and optical transmission system utilizi...
Patent number
6,930,823
Issue date
Aug 16, 2005
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical sending apparatus and channel extension method
Patent number
6,738,181
Issue date
May 18, 2004
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmitter and optical transmission system
Patent number
6,407,845
Issue date
Jun 18, 2002
Fujitsu Limited
Hiroshi Nakamoto
G02 - OPTICS
Information
Patent Grant
Optical modulation apparatus and method of controlling optical modu...
Patent number
6,362,913
Issue date
Mar 26, 2002
Fujitsu Limited
Hiroki Ooi
G02 - OPTICS
Information
Patent Grant
Optical modulator outputting an optical signal with a drive voltage...
Patent number
6,317,249
Issue date
Nov 13, 2001
Fujitsu Limited
Hiroshi Nakamoto
G02 - OPTICS
Information
Patent Grant
Optical modulation apparatus and method of controlling
Patent number
6,278,539
Issue date
Aug 21, 2001
Fujitsu Limited
Hiroki Ooi
G02 - OPTICS
Information
Patent Grant
Optical transmission apparatus, optical repetition apparatus and op...
Patent number
6,266,179
Issue date
Jul 24, 2001
Fujitsu Limited
Hiroshi Nakamoto
G02 - OPTICS
Information
Patent Grant
Demodulator and a polarization diversity receiver for coherent opti...
Patent number
5,253,097
Issue date
Oct 12, 1993
Fujitsu Limited
Takao Naito
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
FORWARD RAMAN AMPLIFIER, BIDIRECTIONAL RAMAN AMPLIFICATION SYSTEM,...
Publication number
20240129034
Publication date
Apr 18, 2024
Fujitsu Limited
Hiroshi NAKAMOTO
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
OPTICAL TRANSMISSION APPARATUS AND OPTICAL TRANSMISSION METHOD
Publication number
20140348506
Publication date
Nov 27, 2014
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM, DISPERSION SLOPE IMPARTING SECTION, AND METHO...
Publication number
20120128362
Publication date
May 24, 2012
FUJITSU LIMITED
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, TRANSMITTER, RECEIVER AND METHOD
Publication number
20110268456
Publication date
Nov 3, 2011
FUJITSU LIMITED
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Polarization fluctuation compensation device and optical communicat...
Publication number
20110249971
Publication date
Oct 13, 2011
Fujitsu Limited
Shoichiro Oda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical transmitting apparatus and optical communication system
Publication number
20090297165
Publication date
Dec 3, 2009
FUJITSU LIMITED
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical transmission system
Publication number
20090245809
Publication date
Oct 1, 2009
FUJITSU LIMITED
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WAVELENGTH DIVISION MULTIPLEXING TRANSMISSION SYSTEM
Publication number
20090162059
Publication date
Jun 25, 2009
FUJITSU LIMITED
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical transmitter and optical transmission system
Publication number
20080085127
Publication date
Apr 10, 2008
FUJITSU LIMITED
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WDM optical transmission system and WDM optical transmission method
Publication number
20080075463
Publication date
Mar 27, 2008
FUJITSU LIMITED
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical wavelength controlling method and a system thereof
Publication number
20070077066
Publication date
Apr 5, 2007
FUJITSU LIMITED
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Apparatus and method of compensating transmission property of light...
Publication number
20060067701
Publication date
Mar 30, 2006
FUJITSU LIMITED
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical demultiplexing method and optical multiplexing method, and...
Publication number
20060062577
Publication date
Mar 23, 2006
FUJITSU LIMITED
Akira Miura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Raman amplifier
Publication number
20050063043
Publication date
Mar 24, 2005
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Quality monitoring method and apparatus for wavelength division mul...
Publication number
20040190899
Publication date
Sep 30, 2004
FUJITSU LIMITED
Kenichi Torii
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical transmission method and optical transmission system utilizi...
Publication number
20030011874
Publication date
Jan 16, 2003
FUJITSU LIMITED
Hiroshi Nakamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Optical transmitter and optical transmission system
Publication number
20020005975
Publication date
Jan 17, 2002
Hiroshi Nakamoto
G02 - OPTICS
Information
Patent Application
Optical modulation apparatus and method of controlling optical modu...
Publication number
20010007508
Publication date
Jul 12, 2001
Hiroki Ooi
G02 - OPTICS