Nippon Telegraph and Telephone Corporation

Japon

 
Quantité totale PI 14 105
Quantité totale incluant filiales 14 673 (+ 773 pour les filiales)
Rang # Quantité totale PI 54
Note d'activité PI 4,7/5.0    17 310
Rang # Activité PI 22
Activité incl filiales 4,6/5.0    17 721
Symbole boursier
ISIN JP3735400008
Capitalisation 12061302144480.0  (JPY)
Industrie Telecom Services
Secteur Communication Services

Brevets

Marques

5 031 0
172 0
8 902 0
0
 
Dernier brevet 2024 - Design device, design method, an...
Premier brevet 1976 - Reproducer for an eraseable vide...

Filiales

28 subsidiaries with IP (698 patents, 75 trademarks)

26 subsidiaries without IP

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Derniers inventions, produits et services

2023 Invention Multicore optical fiber, method of designing multicore optical fiber, and optical transmission me...
Invention Wireless communication system, wireless communication method, wireless lan access point, and wire...
Invention Optical wiring unit, optical cross-connect unit, optical cross-connect device, and node. An optic...
2022 Invention Data access system, server device, data access method, and program. This server device comprises:...
Invention Temperature measurement device, method, and program. A temperature measurement device provided wi...
Invention Beamformer. The beamformer (10) for directing an incident electromagnetic wave, comprising a firs...
Invention Route search device, route search method, and program. A route search device according to one asp...
Invention Optical fiber bundle. The purpose of the present invention is to provide an optical fiber bundle ...
Invention Analysis method and measurement chip. First, step S101 of this analysis method involves culturing...
Invention Propagation environment reproduction device, propagation environment reproduction method, and pro...
Invention Information collection system, information collection method, information collection server, and ...
Invention Image restoration device, image restoration method, and image restoration program. This image res...
Invention Data conversion device, data conversion method, and program. This data conversion device improves...
Invention Spatial sound reconstruction device, spatical sound reconstruction method, and program. A spatial...
Invention Optical transmitter. This optical transmitter (10) comprises a Peltier element (16), an optical m...
Invention Optical transmitter. In regard to an optical transmitter in which an optical modulator and a driv...
Invention Optical transmitter. Provided is a novel configuration and mounting embodiment for an optical tra...
Invention Stake position change detection system and stake position change detection method. A stake positi...
Invention Task scheduler device, computing system, task scheduling method, and program. This task scheduler...
Invention Optical transmitter. Disclosed are, in an optical transmitter in which an optical modulator and a...
2021 Invention Wiring board. A wiring board includes a dielectric substrate, a ground layer disposed on one sur...
Invention Api adapter generator, api adapter generation method, and api adapter generation program. An API...
Invention Circuit, device and method for optical characteristic inspection. An optical characteristic insp...
Invention Coherent optical measuring device, optical line test system and method. The present disclosure i...
Invention Communication methods, transmitters / receivers, repeaters, communication systems and programs. ...
Invention Anticorrotion system. An anchor is buried in the ground near a place where a utility pole is ins...
Invention Usb transmission system, equipment, method, and program. An object of the present disclosure is ...
Invention Voltage-controlled oscillator and bias generation circuit. A voltage-controlled oscillator inclu...
Invention Image synthesis apparatus and image synthesis method. An object of the present disclosure is to ...
Invention Positioning method of electric pole and estimating method of the state of overhead optical fiber ...
Invention Model learning device, direction of arrival estimation device, model learning method, direction o...
Invention Wireless communication monitoring system, wireless communication monitoring method, and monitorin...
Invention Configuration feeding device, configuration feeding method, and configuration feeding program. W...
Invention Data analysis method selection device method and program. A device includes: a data set includin...
Invention Sharing system, sharing method, maintenance node, generation node and program. A sharing system ...
Invention Iinformation processing system, management apparatus, management method, and program. A call con...
Invention Design device, design method, and design program. A design apparatus optimizes, with a first gra...
Invention Band calculation device, band calculation method, and program. A band calculation device (1) acc...
Invention Secure pagerank computation system, method therefor, secure computation apparatus, and program. ...
Invention Object detection device, method, and program. A calculation unit (22) sets each frame, of a movi...
Invention Traffic engineering device, traffic engineering method, and traffic engineering program. An extr...
Invention Imaging device and optical element. An imaging device includes an optical element including a tr...
Invention Video processing apparatus, video processing method and program. A video processing device inclu...
2020 Invention Wireless communication management apparatus, wireless communication management method, and wirele...
Invention Sound signal refinement method, sound signal decode method, apparatus thereof, program, and stora...
Invention Communication system. An object is to provide a communication system in which there are no restr...
Invention Propeller guard and flying body. A propeller guard 2 includes: a propeller guard body 10 configu...
2019 Invention Rule generation apparatus, method and program. A rule generation device according to an embodime...
Invention Arithmetic logic unit, equipment management method, and program. The present invention has an ob...