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Shigeyuki Yanagimachi
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical amplification device, optical transmission system, and opti...
Patent number
11,881,675
Issue date
Jan 23, 2024
NEC Corporation
Hitoshi Takeshita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical fiber amplifier, optical fiber amplifier control method, an...
Patent number
11,870,208
Issue date
Jan 9, 2024
NEC Corporation
Keiichi Matsumoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical amplifier, and control method therefor
Patent number
11,824,320
Issue date
Nov 21, 2023
NEC Corporation
Shigeyuki Yanagimachi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Control device, control system, network system, control method, and...
Patent number
11,695,630
Issue date
Jul 4, 2023
NEC Corporation
Shigeyuki Yanagimachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical network management device, optical network system, optical...
Patent number
11,671,196
Issue date
Jun 6, 2023
NEC Corporation
Shigeyuki Yanagimachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multicore optical fiber amplifier and optical amplification method...
Patent number
11,398,711
Issue date
Jul 26, 2022
NEC Corporation
Shigeru Nakamura
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical amplifying apparatus and method of amplifying optical signal
Patent number
11,374,377
Issue date
Jun 28, 2022
NEC Corporation
Emmanuel Le Taillandier De Gabory
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical amplifier and control method therefor
Patent number
11,329,444
Issue date
May 10, 2022
NEC Corporation
Emmanuel Le Taillandier de Gabory
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical path setting device, optical communication system, and opti...
Patent number
11,212,027
Issue date
Dec 28, 2021
NEC Corporation
Shinsuke Fujisawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Submarine optical communication control device, control method, and...
Patent number
11,115,117
Issue date
Sep 7, 2021
NEC Corporation
Shinsuke Fujisawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Packet communication device which selects an appropriate operation...
Patent number
8,352,655
Issue date
Jan 8, 2013
NEC Corporation
Jun Suzuki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Optical backplane connector, photoelectric conversion module and op...
Patent number
8,172,467
Issue date
May 8, 2012
NEC Corporation
Junichi Sasaki
G02 - OPTICS
Information
Patent Grant
Switch device, switching method and switch control program
Patent number
7,873,056
Issue date
Jan 18, 2011
NEC Corporation
Junichi Higuchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Positioning control device and head positioning control device
Patent number
5,710,497
Issue date
Jan 20, 1998
NEC Corporation
Shigeyuki Yanagimachi
G05 - CONTROLLING REGULATING
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL AMPLIFICATION DEVICE, OPTICAL TRANSMISSION SYSTEM, AND OPTI...
Publication number
20240097397
Publication date
Mar 21, 2024
NEC Corporation
Hitoshi TAKESHITA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, PR...
Publication number
20240080104
Publication date
Mar 7, 2024
NEC Corporation
Shigeyuki Yanagimachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL NETWORK, NETWORK MANAGEMENT DEVICE, AND NETWORK MANAGEMENT...
Publication number
20230361875
Publication date
Nov 9, 2023
NEC Corporation
Shigeyuki Yanagimachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION DEVICE, COMMUNICATION CONTROLLING METHOD, NON-TRANSIT...
Publication number
20220329319
Publication date
Oct 13, 2022
NEC Corporation
Yohei HASEGAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL NETWORK MANAGEMENT DEVICE, OPTICAL NETWORK SYSTEM, OPTICAL...
Publication number
20220303039
Publication date
Sep 22, 2022
NEC Corporation
Shigeyuki Yanagimachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CONTROL DEVICE, CONTROL SYSTEM, NETWORK SYSTEM, CONTROL METHOD, AND...
Publication number
20220173962
Publication date
Jun 2, 2022
NEC Corporation
Shigeyuki YANAGIMACHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL AMPLIFICATION DEVICE, OPTICAL TRANSMISSION SYSTEM, AND OPTI...
Publication number
20220166179
Publication date
May 26, 2022
NEC Corporation
Hitoshi TAKESHITA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
OPTICAL AMPLIFIER, AND CONTROL METHOD THEREFOR
Publication number
20220115830
Publication date
Apr 14, 2022
NEC Corporation
Shigeyuki YANAGIMACHI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
OPTICAL AMPLIFIER, OPTICAL AMPLIFIER EQUALIZING METHOD, AND TRANSMI...
Publication number
20220045473
Publication date
Feb 10, 2022
NEC Corporation
Keiichi MATSUMOTO
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
MULTICORE OPTICAL FIBER AMPLIFIER AND OPTICAL AMPLIFICATION METHOD...
Publication number
20210359485
Publication date
Nov 18, 2021
NEC Corporation
Shigeru NAKAMURA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
NETWORK MONITORING DEVICE AND NETWORK MONITORING METHOD
Publication number
20210258205
Publication date
Aug 19, 2021
NEC Corporation
Shigeyuki Yanagimachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL AMPLIFYING APPARATUS AND METHOD OF AMPLIFYING OPTICAL SIGNAL
Publication number
20210194218
Publication date
Jun 24, 2021
NEC Corporation
Emmanuel LE TAILLANDIER DE GABORY
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SUBMARINE OPTICAL COMMUNICATION CONTROL DEVICE, CONTROL METHOD, AND...
Publication number
20210013965
Publication date
Jan 14, 2021
NEC Corporation
Shinsuke FUJISAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL FIBER AMPLIFIER, OPTICAL FIBER AMPLIFIER CONTROL METHOD, AN...
Publication number
20200412079
Publication date
Dec 31, 2020
NEC Corporation
Keiichi MATSUMOTO
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
OPTICAL PATH SETTING DEVICE, OPTICAL COMMUNICATION SYSTEM, AND OPTI...
Publication number
20200374607
Publication date
Nov 26, 2020
NEC Corporation
Shinsuke FUJISAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL COMMUNICATION DEVICE AND OPTICAL COMMUNICATION SYSTEM
Publication number
20200045388
Publication date
Feb 6, 2020
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Kiyo ISHII
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL AMPLIFIER AND CONTROL METHOD THEREFOR
Publication number
20190221987
Publication date
Jul 18, 2019
NEC Corporation
Emmanuel LE TAILLANDIER DE GABORY
G02 - OPTICS
Information
Patent Application
TRANSMISSION DEVICE, TRANSMISSION METHOD, AND CONTROL PROGRAM FOR T...
Publication number
20120030380
Publication date
Feb 2, 2012
Shigeyuki Yanagimachi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
CONNECTION STRUCTURE AND INFORMATION PROCESSING APPARATUS
Publication number
20100321902
Publication date
Dec 23, 2010
Ichiro Hatakeyama
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Optical backplane connector, photoelectric conversion module and op...
Publication number
20090310914
Publication date
Dec 17, 2009
NEC Corporation
Junichi Sasaki
G02 - OPTICS
Information
Patent Application
SWITCH DEVICE, SWITCHING METHOD AND SWITCH CONTROL PROGRAM
Publication number
20090175281
Publication date
Jul 9, 2009
NEC Corporation
Junichi Higuchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION APPARATUS FOR COMMUNICATION BETWEEN HOUSING SLOTS, WI...
Publication number
20090148116
Publication date
Jun 11, 2009
NEC Corporation
Shigeyuki Yanagimachi
G02 - OPTICS
Information
Patent Application
Packet communication device which selects an appropriate operation...
Publication number
20080172514
Publication date
Jul 17, 2008
NEC Corporation
Jun Suzuki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Optical switching subsystem and optical switching subsystem self-di...
Publication number
20040047548
Publication date
Mar 11, 2004
NEC Corporation
Toshiyuki Okumura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Cross connecting device and optical communication system
Publication number
20030206743
Publication date
Nov 6, 2003
Shigeyuki Yanagimachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Non-blocking switching system and switching method thereof
Publication number
20020159445
Publication date
Oct 31, 2002
NEC Corporation
Shigeyuki Yanagimachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE