31 Patents
- US125537692026Positioning Method of Electric Pole and Estimating Method of the State of Overhead Optical Fiber Cable
NTT, Inc.
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- US123990792025Devices and Methods for Measuring the Amount of Frequency Modulation
Nippon Telegraph And Telephone Corporation
0 cites - US123858062025Power Coupling Coefficient Measuring Method and Power Coupling Coefficient Measuring Device
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US123885272025Brillouin Gain Spectrum Distribution Measurement Method and Equipment
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US123455552025Phase Measuring Method and Signal Processing Device
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US123207252025Several Mode Fiber Test Method and Several Mode Fiber Test Device
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US123134492025Optical Pulse Test Method and Optical Pulse Test Equipment
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US123134892025Optical Fiber Measurement System, Optical Fiber Measurement Method, Control Arithmetic Device, and Program
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US122981592025Technique for Analyzing a Spectrum of Backscattered Light in an Optical Fiber
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
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- US120318582024Aerial Optical Fiber Cable Inspection Method, Aerial Optical Fiber Cable Inspection Device, and Program
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
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- US119943762024Distributed Vibration Measuring Device and Method
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US119769622024Optical-fiber Path Searching Method, Optical-fiber Path Searching System, Signal Processing Device, and Program
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US119657582024Brillouin Optical Sensing Device and Optical Sensing Method
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US119209742024Vibration Distribution Measuring System, Vibration Waveform Analysis Method, Vibration Waveform Analyzing Device, and Analyzing Program
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US119063872024Test Method and Test Device for Mode Field Diameter
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US118798032024Optical Fiber Evaluation Method and Optical Fiber Evaluation Apparatus
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US118675552024Phase Measurement Method and Signal Processing Device
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US118600282024Vibration Detection Method with Improved Signal Processing
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US117889092023Measuring Device and Measuring Method Using Tape Core Wire
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US117889282023Light Intensity Distribution Measurement Method and Light Intensity Distribution Measurement Device
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US117544652023Optical Pulse Testing Device and Optical Pulse Testing Method
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US117502832023Optical Fiber Route Search Method, Optical Fiber Route Search Device and Program
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US117195992023Optical Fiber Test Method and Optical Fiber Test Device
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
0 cites - US116443472023Manhole Position Specification Method and Manhole Position Specification System
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
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