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Yusuke Koshikiya
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Tsukuba-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical frequency multiplexing coherent OTDR, testing method, signa...
Patent number
11,385,127
Issue date
Jul 12, 2022
Nippon Telegraph and Telephone Corporation
Hiroyuki Iida
G01 - MEASURING TESTING
Information
Patent Grant
Optical pulse testing device and optical pulse testing method
Patent number
11,199,473
Issue date
Dec 14, 2021
Nippon Telegraph and Telephone Corporation
Hiroyuki Iida
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Optical fiber monitoring method, and optical fiber monitoring system
Patent number
11,112,332
Issue date
Sep 7, 2021
Nippon Telegraph and Telephone Corporation
Yusuke Koshikiya
G01 - MEASURING TESTING
Information
Patent Grant
Optical fiber line characteristic analysis apparatus and analysis m...
Patent number
8,928,868
Issue date
Jan 6, 2015
Nippon Telegraph and Telephone Corporation
Hiroshi Takahashi
G01 - MEASURING TESTING
Information
Patent Grant
Optical reflectometry and optical reflectometer
Patent number
8,149,419
Issue date
Apr 3, 2012
Nippon Telegraph and Telephone Corporation
Xinyu Fan
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
DEVICE, METHOD AND SYSTEM FOR CALCULATING POWER COUPLING COEFFICIEN...
Publication number
20240344928
Publication date
Oct 17, 2024
Nippon Telegraph and Telephone Corporation
Atsushi NAKAMURA
G01 - MEASURING TESTING
Information
Patent Application
SIGNAL PROCESSING METHOD AND SIGNAL PROCESSING DEVICE
Publication number
20240295433
Publication date
Sep 5, 2024
Nippon Telegraph and Telephone Corporation
Yoshifumi WAKISAKA
G01 - MEASURING TESTING
Information
Patent Application
VIBRATION MEASURING INSTRUMENT AND VIBRATION MEASUREMENT METHOD
Publication number
20240280403
Publication date
Aug 22, 2024
Nippon Telegraph and Telephone Corporation
Yoshifumi WAKISAKA
G01 - MEASURING TESTING
Information
Patent Application
SENSING SYSTEM, SENSING METHOD, AND ANALYZER
Publication number
20240271971
Publication date
Aug 15, 2024
Nippon Telegraph and Telephone Corporation
Tatsuya OKAMOTO
G01 - MEASURING TESTING
Information
Patent Application
OPTICAL FIBER TEST METHOD AND OPTICAL FIBER TEST EQUIPMENT
Publication number
20240264034
Publication date
Aug 8, 2024
Nippon Telegraph and Telephone Corporation
Tomokazu ODA
G01 - MEASURING TESTING
Information
Patent Application
CABLE TEST SYSTEM, ANALYZER, CABLE TEST METHOD, AND PROGRAM
Publication number
20240192049
Publication date
Jun 13, 2024
Nippon Telegraph and Telephone Corporation
Tatsuya OKAMOTO
G01 - MEASURING TESTING
Information
Patent Application
MODE FIELD DIAMETER MEASURING METHOD AND MODE FIELD DIAMETER MEASUR...
Publication number
20240183746
Publication date
Jun 6, 2024
Nippon Telegraph and Telephone Corporation
Atsushi NAKAMURA
G01 - MEASURING TESTING
Information
Patent Application
ANALYZER, MEASUREMENT SYSTEM, MEASUREMENT METHOD AND PROGRAM
Publication number
20240175726
Publication date
May 30, 2024
Nippon Telegraph and Telephone Corporation
Tatsuya OKAMOTO
G01 - MEASURING TESTING
Information
Patent Application
BRILLOUIN GAIN SPECTRUM DISTRIBUTION MEASUREMENT METHOD AND EQUIPMENT
Publication number
20240146413
Publication date
May 2, 2024
Nippon Telegraph and Telephone Corporation
Tomokazu ODA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
POSITIONING METHOD OF ELECTRIC POLE AND ESTIMATING METHOD OF THE ST...
Publication number
20240118126
Publication date
Apr 11, 2024
Nippon Telegraph and Telephone Corporation
Tatsuya OKAMOTO
G01 - MEASURING TESTING
Information
Patent Application
COHERENT OPTICAL MEASURING DEVICE, OPTICAL LINE TEST SYSTEM AND METHOD
Publication number
20240118127
Publication date
Apr 11, 2024
Nippon Telegraph and Telephone Corporation
Daisuke IIDA
G01 - MEASURING TESTING
Information
Patent Application
EQUIPMENT LOCATION IDENTIFICATION SYSTEM, COVER, AND EQUIPMENT LOCA...
Publication number
20240060817
Publication date
Feb 22, 2024
Nippon Telegraph and Telephone Corporation
Daisuke IIDA
G01 - MEASURING TESTING
Information
Patent Application
OPTICAL FIBER STRAIN MEASURING METHOD AND OPTICAL FIBER STRAIN MEAS...
Publication number
20240035808
Publication date
Feb 1, 2024
Nippon Telegraph and Telephone Corporation
Atsushi NAKAMURA
G01 - MEASURING TESTING
Information
Patent Application
DEVICES AND METHODS FOR MEASURING THE AMOUNT OF FREQUENCY MODULATION
Publication number
20230400379
Publication date
Dec 14, 2023
Nippon Telegraph and Telephone Corporation
Tatsuya OKAMOTO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL FIBER MEASUREMENT SYSTEM, OPTICAL FIBER MEASUREMENT METHOD,...
Publication number
20230332980
Publication date
Oct 19, 2023
Nippon Telegraph and Telephone Corporation
Tomokazu ODA
G01 - MEASURING TESTING
Information
Patent Application
OPTICAL FREQUENCY MULTIPLEXING COHERENT OTDR, TESTING METHOD, SIGNA...
Publication number
20210262892
Publication date
Aug 26, 2021
Nippon Telegraph and Telephone Corporation
Hiroyuki IIDA
G01 - MEASURING TESTING
Information
Patent Application
OPTICAL PULSE TESTING DEVICE AND OPTICAL PULSE TESTING METHOD
Publication number
20210239567
Publication date
Aug 5, 2021
Nippon Telegraph and Telephone Corporation
Hiroyuki IIDA
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
OPTICAL FIBER MONITORING METHOD, AND OPTICAL FIBER MONITORING SYSTEM
Publication number
20210003474
Publication date
Jan 7, 2021
Nippon Telegraph and Telephone Corporation
Yusuke KOSHIKIYA
G01 - MEASURING TESTING
Information
Patent Application
OPTICAL FIBER LINE CHARACTERISTIC ANALYSIS APPARATUS AND ANALYSIS M...
Publication number
20140098362
Publication date
Apr 10, 2014
Nippon Telegraph and Telephone Corporation
Hiroshi Takahashi
G01 - MEASURING TESTING
Information
Patent Application
Optical Reflectometry and Optical Reflectometer
Publication number
20100097615
Publication date
Apr 22, 2010
Nippon Telegraph and Telephone Corporation
Xinyu Fan
G01 - MEASURING TESTING