Nippon Telegraph and Telephone Corporation

Japon

 
Quantité totale PI 16 416
Quantité totale incluant filiales 17 014 (+ 800 pour les filiales)
Rang # Quantité totale PI 51
Note d'activité PI 4,7/5.0    18 589
Rang # Activité PI 21
Activité incl filiales 4,6/5.0    19 007
Symbole boursier
ISIN JP3735400008
Capitalisation 12061302144480.0  (JPY)
Industrie Telecom Services
Secteur Communication Services

Brevets

Marques

5 871 0
166 0
10 379 0
0
 
Dernier brevet 2025 - Optical transmission system, opt...
Premier brevet 1976 - Reproducer for an eraseable vide...

Filiales

28 subsidiaries with IP (732 patents, 68 trademarks)

26 subsidiaries without IP

 S'inscrire grtuitement pour accéder à la liste des filiales

Derniers inventions, produits et services

2024 Invention Transimpedance amplifier. A reset signal is generated by a TIA circuit alone. In an embodiment, ...
Invention Search result display device, search result display method, and non-transitory computer readable ...
Invention Spectral element array, image sensor and image apparatus. An image sensor includes a two-dimensi...
Invention Optical module and component thereof. The present disclosure provides: an optical device-use comp...
2023 Invention Reception device and signal detection method. This reception device comprises: a calculation unit...
Invention Undersea observation device, undersea observation system, and transmission method. An undersea ob...
Invention Semiconductor laser and method for generating optical spikes. The semiconductor laser (10) of the...
Invention Question analysis method and question analysis device. This question analysis method comprises: i...
Invention Bioelectrode and method for manufacturing bioelectrode. A bioelectrode (10) is provided with a co...
Invention Estimation device, estimation method, and trained model generation method. In the present inventi...
Invention Encoding circuit, decoding circuit, encoding method, decoding method, and program. This encoding ...
Invention Avatar control device, method, and program. One aspect of the present invention is configured to:...
Invention Information processing method, information processing device, and program. An information process...
Invention Station-side device, optical subscriber-side terminating device, communication system, bandwidth ...
Invention Phase adjustment circuit. A phase adjustment circuit (10) according to the present invention is p...
Invention Evaluation device, evaluation method, and program. The present disclosure is an evaluation device...
Invention Spot size converter and optical integrated device. A spot-size converter (11) of the present inve...
Invention Monitoring system. In this monitoring system (1), a collection unit (21) of an xFlow proxy (2) co...
Invention Analysis device and analysis method. The analysis device (10) identifies a service implemented by...
Invention Subjective feeling of movement recognition assistance device, method, and program. According to o...
Invention Driver circuit. This driver circuit is configured to convert an input signal (Vin) that is an inp...
Invention Grouping assistance device, grouping assistance method, and program. The present invention provid...
Invention Grouping assistance device, grouping assistance method, and program. A grouping assistance device...
2022 Invention Measurement route design method, measurement route design apparatus and non-transitory computer-r...
Invention Optical fiber test equipment and optical fiber test method. An object of the present invention i...
Invention Estimation method, optical receiving apparatus, and computer program. An estimation method in an...
2021 Invention Semiconductor laser. A semiconductor laser includes: a waveguide structure including, in order, ...
Invention Strategy planning support apparatus, communication system, strategy planning support method, and ...
Invention Anomaly detection device, anomaly detection method, and anomaly detection program. An abnormalit...
Invention Update method of redundancy system, redundancy system, and update control device. An update cont...
Invention Cancellation apparatus, method and program. A cancellation device includes a sound signal proces...
Invention Compatibility evaluation apparatus, compatibility evaluation method, and program. A compatibilit...
Invention Wireless communication system, wireless communication method, wireless communication processing d...
Invention Detection system, detection device, detection method, and detection program. A detection system ...
Invention Generation device, generation method, and generation program. A generation device (10) includes:...
Invention Optical waveguide substrate, optical device and manufacturing method of optical device. An optic...
Invention Device, method and program for extracting linear objects. An object of the present disclosure is...
Invention Optical device. An optical device includes a cladding layer and a core formed on the cladding la...
Invention Delivery support apparatus, delivery support method, and delivery support program. A delivery su...
Invention Image correction device, image correction method, and image correction program. An input process...
Invention Optical transmitter. Optical axes of a chip and a spatial optical system are aligned, and a high...
Invention Source separation apparatus, source separation method, and program. A source separation apparatu...
Invention Position posture estimation method, position posture estimation device, and program. A position ...
Invention Data processing device, data processing method, and data processing program. There is provided a...
Invention Antenna control device, antenna control method, and program. An antenna control device (10) acco...
Invention Optical transmission system, optical transmission method and program. An optical transmission sy...
Invention State estimation system and method. According to one aspect of this invention, upon estimating a...
Invention Air vehicle control system, air vehicle control device, remote control device, air vehicle, air v...
Invention Communication system, computing machine, communication method and program. A communication syste...
Invention Information generating device, information generating system, information generating method, and ...