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Shogo Yamanaka
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical receiver evaluation method and optical receiver evaluation...
Patent number
11,736,202
Issue date
Aug 22, 2023
Nippon Telegraph and Telephone Corporation
Shogo Yamanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmitter and method for controller optical transmitter
Patent number
11,646,800
Issue date
May 9, 2023
Nippon Telegraph and Telephone Corporation
Shogo Yamanaka
G02 - OPTICS
Information
Patent Grant
Polarization multi/demultiplexed optical transceiver circuit
Patent number
11,509,396
Issue date
Nov 22, 2022
Nippon Telegraph and Telephone Corporation
Yusuke Nasu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Polarization multiplexed optical transmitter circuit and polarizati...
Patent number
11,493,776
Issue date
Nov 8, 2022
Nippon Telegraph and Telephone Corporation
Yusuke Nasu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission characteristic estimation method, optical tran...
Patent number
10,637,569
Issue date
Apr 28, 2020
NTT Electronics Corporation
Akihiro Yamagishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal generating circuit, optical signal transmitting apparatus, s...
Patent number
9,614,621
Issue date
Apr 4, 2017
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal generating circuit, optical signal transmitting apparatus, s...
Patent number
9,520,947
Issue date
Dec 13, 2016
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal generating circuit, optical signal transmitting apparatus, s...
Patent number
8,929,750
Issue date
Jan 6, 2015
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Chromatic dispersion value calculating apparatus, optical signal re...
Patent number
8,787,769
Issue date
Jul 22, 2014
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Vector sum phase shifter, optical transceiver, and control circuit
Patent number
8,687,968
Issue date
Apr 1, 2014
Nippon Telegraph and Telephone Corporation
Hideyuki Nosaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Voltage generator, control circuit, vector sum phase shifter, and o...
Patent number
8,687,973
Issue date
Apr 1, 2014
Nippon Telegraph and Telephone Corporation
Hideyuki Nosaka
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Current-switching cell and digital-to-analog converter
Patent number
8,493,257
Issue date
Jul 23, 2013
Nippon Telegraph and Telephone Corporation
Munehiko Nagatani
H03 - BASIC ELECTRONIC CIRCUITRY
Patents Applications
last 30 patents
Information
Patent Application
Optical Receiver Evaluation Method and Optical Receiver Evaluation...
Publication number
20220140913
Publication date
May 5, 2022
Nippon Telegraph and Telephone Corporation
Shogo Yamanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical Transmitter and Method for Controller Optical Transmitter
Publication number
20220116116
Publication date
Apr 14, 2022
Nippon Telegraph and Telephone Corporation
Shogo Yamanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Polarization Multiplexed Optical Transmitter Circuit and Polarizati...
Publication number
20220066227
Publication date
Mar 3, 2022
Nippon Telegraph and Telephone Corporation
Yusuke Nasu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Polarization Multi/Demultiplexed Optical Transceiver Circuit
Publication number
20220045764
Publication date
Feb 10, 2022
Nippon Telegraph and Telephone Corporation
Yusuke Nasu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical Transmitter/Receiver and Method for Controlling Optical Tra...
Publication number
20210297159
Publication date
Sep 23, 2021
Nippon Telegraph and Telephone Corporation
Shogo Yamanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION CHARACTERISTIC ESTIMATION METHOD, OPTICAL TRAN...
Publication number
20200036440
Publication date
Jan 30, 2020
NTT ELECTRONICS CORPORATION
Akihiro YAMAGISHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL GENERATING CIRCUIT, OPTICAL SIGNAL TRANSMITTING APPARATUS, S...
Publication number
20150078765
Publication date
Mar 19, 2015
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL GENERATING CIRCUIT, OPTICAL SIGNAL TRANSMITTING APPARATUS, S...
Publication number
20150078762
Publication date
Mar 19, 2015
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CHROMATIC DISPERSION VALUE CALCULATING APPARATUS, OPTICAL SIGNAL RE...
Publication number
20120099864
Publication date
Apr 26, 2012
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL GENERATING CIRCUIT, OPTICAL SIGNAL TRANSMITTING APPARATUS, S...
Publication number
20120070159
Publication date
Mar 22, 2012
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CURRENT-SWITCHING CELL AND DIGITAL-TO-ANALOG CONVERTER
Publication number
20110273317
Publication date
Nov 10, 2011
Munehiko Nagatani
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
VOLTAGE GENERATOR, CONTROL CIRCUIT, VECTOR SUM PHASE SHIFTER, AND O...
Publication number
20110236027
Publication date
Sep 29, 2011
Hideyuki Nosaka
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
VECTOR SUM PHASE SHIFTER, OPTICAL TRANSCEIVER, AND CONTROL CIRCUIT
Publication number
20110150495
Publication date
Jun 23, 2011
Hideyuki Nosaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE