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Kohei Hosokawa
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Light amplification device, light transmission system, and light am...
Patent number
11,683,116
Issue date
Jun 20, 2023
NEC Corporation
Keiichi Matsumoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Free-space optical communication receiving device and method of con...
Patent number
10,862,593
Issue date
Dec 8, 2020
NEC Corporation
Kohei Hosokawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Received signal processor and method for processing received signal
Patent number
10,511,409
Issue date
Dec 17, 2019
NEC Corporation
Kohei Hosokawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Free space optical transmitter and free space optical communication...
Patent number
10,454,577
Issue date
Oct 22, 2019
NEC Corporation
Seigo Takahashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical communication device, optical communication system, and opt...
Patent number
10,411,802
Issue date
Sep 10, 2019
NEC Corporation
Akihiro Tanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Digital filter circuit, signal processing device, and digital filte...
Patent number
10,374,581
Issue date
Aug 6, 2019
NEC Corporation
Atsufumi Shibayama
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Free space optical receiver and free space optical receiving method
Patent number
10,313,011
Issue date
Jun 4, 2019
NEC Corporation
Seigo Takahashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Digital filter device and signal processing method
Patent number
10,298,209
Issue date
May 21, 2019
NEC Corporation
Kohei Hosokawa
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Free space optical receiver and free space optical receiving method
Patent number
10,256,904
Issue date
Apr 9, 2019
NEC Corporation
Seigo Takahashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Free space optical receiver and free space optical receiving method
Patent number
10,122,447
Issue date
Nov 6, 2018
NEC Corporation
Seigo Takahashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Fast Fourier transform device, fast Fourier transform method, and r...
Patent number
9,785,614
Issue date
Oct 10, 2017
NEC Corporation
Atsufumi Shibayama
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Frequency offset compensation apparatus and frequency offset compen...
Patent number
9,621,278
Issue date
Apr 11, 2017
NEC Corporation
Kohei Hosokawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal selection apparatus and system, and circuit emulator and met...
Patent number
9,280,623
Issue date
Mar 8, 2016
NEC Corporation
Kohei Hosokawa
G01 - MEASURING TESTING
Information
Patent Grant
Signal selection apparatus and system, and circuit emulator and met...
Patent number
8,739,107
Issue date
May 27, 2014
NEC Corporation
Kohei Hosokawa
G01 - MEASURING TESTING
Information
Patent Grant
Semiconductor verification apparatus, method, and program
Patent number
8,683,404
Issue date
Mar 25, 2014
NEC Corporation
Kohei Hosokawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Semiconductor verification apparatus, method and program
Patent number
8,510,691
Issue date
Aug 13, 2013
NEC Corporation
Kohei Hosokawa
G01 - MEASURING TESTING
Information
Patent Grant
Signal selecting apparatus, circuit amending apparatus, circuit sim...
Patent number
8,281,277
Issue date
Oct 2, 2012
NEC Corporation
Kohei Hosokawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Substrate housing container
Patent number
7,876,575
Issue date
Jan 25, 2011
Elpida Memory, Inc.
Kohei Hosokawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Circuit operation verification device and method
Patent number
7,228,513
Issue date
Jun 5, 2007
NEC Corporation
Kohei Hosokawa
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL COMMUNICATION SYSTEM, OPTICAL COMMUNICATION METHOD AND NON-...
Publication number
20240195498
Publication date
Jun 13, 2024
NEC Corporation
Ankith VINAYACHANDRAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, AND OPTICAL TRANSMISSION METHOD
Publication number
20230327767
Publication date
Oct 12, 2023
NEC Corporation
Hitoshi Takeshita
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
LIGHT AMPLIFICATION DEVICE, LIGHT TRANSMISSION SYSTEM, AND LIGHT AM...
Publication number
20220376811
Publication date
Nov 24, 2022
NEC Corporation
Keiichi MATSUMOTO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
FREE-SPACE OPTICAL COMMUNICATION RECEIVING DEVICE AND METHOD OF CON...
Publication number
20200304213
Publication date
Sep 24, 2020
NEC Corporation
Kohei HOSOKAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RECEIVED SIGNAL PROCESSOR AND METHOD FOR PROCESSING RECEIVED SIGNAL
Publication number
20180323904
Publication date
Nov 8, 2018
NEC Corporation
Kohei HOSOKAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
FREE SPACE OPTICAL TRANSMITTER AND FREE SPACE OPTICAL COMMUNICATION...
Publication number
20180234180
Publication date
Aug 16, 2018
NEC Corporation
Seigo TAKAHASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL COMMUNICATION DEVICE, OPTICAL COMMUNICATION SYSTEM, AND OPT...
Publication number
20180212681
Publication date
Jul 26, 2018
NEC Corporation
Akihiro TANAKA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DIGITAL FILTER CIRCUIT, SIGNAL PROCESSING DEVICE, AND DIGITAL FILTE...
Publication number
20180013409
Publication date
Jan 11, 2018
NEC Corporation
Atsufumi SHIBAYAMA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
FREE SPACE OPTICAL RECEIVER AND FREE SPACE OPTICAL RECEIVING METHOD
Publication number
20170264365
Publication date
Sep 14, 2017
NEC Corporation
Seigo TAKAHASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
FREE SPACE OPTICAL RECEIVER AND FREE SPACE OPTICAL RECEIVING METHOD
Publication number
20170207850
Publication date
Jul 20, 2017
NEC Corporation
Seigo TAKAHASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
FREE SPACE OPTICAL RECEIVER AND FREE SPACE OPTICAL RECEIVING METHOD
Publication number
20170070289
Publication date
Mar 9, 2017
NEC Corporation
Seigo TAKAHASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DIGITAL FILTER DEVICE AND SIGNAL PROCESSING METHOD
Publication number
20160105160
Publication date
Apr 14, 2016
NEC Corporation
Kohei HOSOKAWA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
FAST FOURIER TRANSFORM DEVICE, FAST FOURIER TRANSFORM METHOD, AND R...
Publication number
20150363360
Publication date
Dec 17, 2015
NEC Corporation
Atsufumi SHIBAYAMA
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
FREQUENCY OFFSET COMPENSATION APPARATUS AND FREQUENCY OFFSET COMPEN...
Publication number
20150311983
Publication date
Oct 29, 2015
NEC Corporation,
Kohei HOSOKAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL SELECTION APPARATUS AND SYSTEM, AND CIRCUIT EMULATOR AND MET...
Publication number
20140229906
Publication date
Aug 14, 2014
NEC Corporation
Kohei Hosokawa
G01 - MEASURING TESTING
Information
Patent Application
SEMICONDUCTOR VERIFICATION APPARATUS, METHOD AND PROGRAM
Publication number
20110191735
Publication date
Aug 4, 2011
Kohei Hosokawa
G01 - MEASURING TESTING
Information
Patent Application
SEMICONDUCTOR VERIFICATION APPARATUS, METHOD, AND PROGRAM
Publication number
20110138364
Publication date
Jun 9, 2011
NEC Corporation
Kohei Hosokawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SIGNAL SELECTING APPARATUS, CIRCUIT AMENDING APPARATUS, CIRCUIT SIM...
Publication number
20100198573
Publication date
Aug 5, 2010
NEC Corporation
Kohei Hosokawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SIGNAL SELECTION APPARATUS AND SYSTEM, AND CIRCUIT EMULATOR AND MET...
Publication number
20090319219
Publication date
Dec 24, 2009
Kohei Hosokawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SUBSTRATE HOUSING CONTAINER
Publication number
20090002966
Publication date
Jan 1, 2009
Elpida Memory, Inc.
Kohei Hosokawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Circuit operation verification device and method
Publication number
20050055190
Publication date
Mar 10, 2005
NEC Corporation
Kohei Hosokawa
G06 - COMPUTING CALCULATING COUNTING