Assignee
NTT INC
US270 patents
Top patents by PatentIndex Score
US4897050AJan 30, 1990
Method and apparatus for making coaxial couplings
NTT INC15 citations66
US12556285B2Feb 17, 2026
Optical transmitter and frequency control method in optical transmission
NTT INC1 citations64
US12512973B2Dec 30, 2025
Secret maximum value calculation apparatus, method and program
NTT INC1 citations64
US12446089B2Oct 14, 2025
Base station and terminal apparatus
NTT INC1 citations64
US12537517B2Jan 27, 2026
Phase adjustment circuit
NTT INC1 citations63
US12452588B2Oct 21, 2025
Conversation assisting apparatus, conversation assisting method, non-transitory computer-readable recording medium
NTT INC0 citations63
US12574983B2Mar 10, 2026
Base station and terminal apparatus
NTT INC0 citations62
US12567900B2Mar 3, 2026
Wireless communication apparatus, wireless communication system, wireless communication method and program
NTT INC0 citations62
US12567899B2Mar 3, 2026
Wireless communication apparatus and wireless communication method
NTT INC0 citations62
US12549252B2Feb 10, 2026
Optical signal emitting direction control apparatus and optical signal emitting direction control method
NTT INC0 citations62
US12536279B2Jan 27, 2026
Extraction device, extraction method, and extraction program
NTT INC0 citations62
US12531799B2Jan 20, 2026
Terminal apparatus, communication method, and communication program
NTT INC0 citations62
US12498257B2Dec 16, 2025
Distributed acoustic sensing device and method
NTT INC0 citations62
US12500678B2Dec 16, 2025
Information processing system, delay control device, information processing method and program
NTT INC0 citations62
US12470367B2Nov 11, 2025
Identifier change management apparatus, identifier change management method, and identifier change management program
NTT INC0 citations62
US12470257B2Nov 11, 2025
Doppler shift compensation apparatus and doppler shift compensation method
NTT INC0 citations62
US12463712B2Nov 4, 2025
Relay apparatus and relay method
NTT INC0 citations62
US12457236B2Oct 28, 2025
Determination device, determination method, and determination program
NTT INC0 citations62
US12444836B2Oct 14, 2025
Wireless communication apparatus and control method
NTT INC0 citations62
US12445371B2Oct 14, 2025
Communication path finding device, communication path finding method, and program
NTT INC0 citations62
US12440407B2Oct 14, 2025
Moving apparatus
NTT INC0 citations62
US12575762B2Mar 17, 2026
Wearable sensor and sweating analysis device
NTT INC0 citations61
US12553769B2Feb 17, 2026
Positioning method of electric pole and estimating method of the state of overhead optical fiber cable
NTT INC0 citations61
US12546944B2Feb 10, 2026
Optical module
NTT INC0 citations61
US12541145B2Feb 3, 2026
Photomask, optical-waveguide, optical circuit and method of manufacturing an optical-waveguide
NTT INC0 citations61
US12540877B2Feb 3, 2026
Optical transmission line test equipment and test method
NTT INC0 citations61
US12540878B2Feb 3, 2026
Connection loss difference measurement method, equipment and program
NTT INC0 citations61
US12538601B2Jan 27, 2026
Optical element, image sensor and imaging device
NTT INC0 citations61
US12517008B2Jan 6, 2026
Apparatus and method for measuring the delay time difference between propagation modes
NTT INC0 citations61
US12512910B2Dec 30, 2025
Optical communication device and optical communication method
NTT INC0 citations61
US12504321B2Dec 23, 2025
Overhead optical cable test system and method
NTT INC0 citations61
US12493750B2Dec 9, 2025
Detecting apparatus, training apparatus, detecting method, training method, detecting program, and training program
NTT INC0 citations61
US12474527B2Nov 18, 2025
Optical coupling device and optical coupling system
NTT INC0 citations61
US12476770B2Nov 18, 2025
Wireless communication system, relay device, and channel setting method
NTT INC0 citations61
US12457135B2Oct 28, 2025
Wireless communication method, wireless communication system, and transmitter
NTT INC0 citations61
US12457040B2Oct 28, 2025
Optical transmission system and transmission mode selecting method
NTT INC0 citations61
US12457065B2Oct 28, 2025
Anomaly detection device, anomaly detection method, and anomaly detection program
NTT INC0 citations61
US12451136B2Oct 21, 2025
Audio caption generation method, audio caption generation apparatus, and program
NTT INC0 citations61
US12442987B2Oct 14, 2025
Branch ratio measuring device, branch ratio measuring method, and optical multiplexing/demultiplexing circuit manufacturing method
NTT INC0 citations61
US12598005B2Apr 7, 2026
Station side optical line terminal and registration method
NTT INC0 citations60
US12591100B2Mar 31, 2026
Optical cable laying method
NTT INC0 citations60
US12587930B2Mar 24, 2026
Communication system, connection destination control method, control apparatus and program
NTT INC0 citations60
US12566927B2Mar 3, 2026
Dialogue processing apparatus, learning apparatus, dialogue processing method, learning method and program
NTT INC0 citations60
US12567719B2Mar 3, 2026
Optical semiconductor chip
NTT INC0 citations60
US12562576B2Feb 24, 2026
Control apparatus, power supply system, control method and program
NTT INC0 citations60
US12547010B2Feb 10, 2026
Diffraction element device
NTT INC0 citations60
US12542422B2Feb 3, 2026
Optical transmitter
NTT INC0 citations60
US12531633B2Jan 20, 2026
Optical communication device, optical access system and optical communication method
NTT INC0 citations60
US12529594B2Jan 20, 2026
Coherent optical measuring device for facility line test
NTT INC0 citations60
US12483519B2Nov 25, 2025
Transmission system, transmission method and transmission program
NTT INC0 citations60
Showing the top 50 of 270 patents by PatentIndex Score.