Nippon Telegraph and Telephone Corporation

Japon

 
Quantité totale PI 16 200
Quantité totale incluant filiales 16 787 (+ 791 pour les filiales)
Rang # Quantité totale PI 51
Note d'activité PI 4,7/5.0    18 550
Rang # Activité PI 21
Activité incl filiales 4,6/5.0    18 966
Symbole boursier
ISIN JP3735400008
Capitalisation 12061302144480.0  (JPY)
Industrie Telecom Services
Secteur Communication Services

Brevets

Marques

5 786 0
166 0
10 248 0
0
 
Dernier brevet 2025 - Position control system for unde...
Premier brevet 1976 - Reproducer for an eraseable vide...

Filiales

28 subsidiaries with IP (723 patents, 68 trademarks)

26 subsidiaries without IP

 S'inscrire grtuitement pour accéder à la liste des filiales

Derniers inventions, produits et services

2024 Invention Optical communication system, master station device, and optical communication method. This optic...
2023 Invention Position control system for underwater device. The purpose of the present invention is to provide...
Invention Photoelectric module. This photoelectronic module is provided with a main wiring board (101), an ...
Invention Optical device. The present disclosure realizes optical devices with diverse connection configura...
Invention Optical communication module. The present invention curbs an increase in cost associated with an ...
Invention Optical device. The present disclosure provides an optical device in which an optical transmitter...
Invention Position control system for underwater vehicle. The purpose of the present invention is to provid...
Invention Determination device, determination method, and determination program. In a determination device ...
Invention Measurement device, measurement method, and program. The present invention comprises: a generatio...
Invention Prediction device, prediction method, and prediction program. A prediction device (10) has a feat...
Invention Classification device, classification method, and program. A classification device according to o...
Invention Pole reinforcement method. The purpose of the present invention is to provide a pole reinforcemen...
Invention Communication system, communication method, and program. A generation device (51) comprises a fir...
Invention Remote operation assistance system and method. According to one aspect of this invention, when ex...
Invention Screen sharing device, screen sharing method, and program. A screen sharing device according to o...
Invention Beam generation device and beam generation method. One aspect of the present invention pertains t...
Invention Lightning energy storage device. A lightning energy storage device 1 is provided with: a lightnin...
Invention Steering assitance system. Provided is a steering assistance system for assisting the steering of...
Invention Wireless communication system, terminal, wireless communication method, and wireless communicatio...
Invention Wireless communication system, wireless communication method, wireless communication device, and ...
Invention Optical transceiver. Provided is an optical transceiver for establishing a smooth high-frequency ...
Invention Reception directivity control device and method for manufacturing same. One aspect of the present...
Invention Optical transceiver. The present invention provides an optical transceiver capable of ultrafast o...
Invention Radio wave propagation simulation system, radio wave propagation simulation device, radio wave pr...
Invention Communication system, communication method, and program. A transmission device 10 generates a hea...
Invention Optical transceiver. Disclosed is an optical transceiver that realizes smooth high-frequency conn...
Invention Optical transceiver, and method and apparatus for manufacturing same. Provided are a configuratio...
Invention Magnetic material-containing optical fiber, magnetic material-containing optical fiber tape core,...
Invention Reception directivity control device and reception directivity control method. According to the p...
Invention Directivity control device and directivity control method. An antenna unit has a plurality of ant...
Invention Angle control device, angle control method, and program. An angle control device according to one...
Invention Intent extraction device, intent extraction method, and program. An intent extraction device acco...
Invention Communication control device, communication control method, and program. A communication control ...
Invention Underwater sensor system, control device, control method, and program. Provided is an underwater ...
Invention Subjective state data collection device, subjective state data collection method, and program. A ...
Invention Deterioration acceleration device. A deterioration acceleration device according to the present i...
Invention Uncore frequency control device, uncore frequency control method, and uncore frequency control pr...
Invention Propagation characteristic estimation device, propagation characteristic estimation method, and p...
Invention Radio communication system, centralized management device, and radio communication method. The pr...
Invention Failure estimation device, failure estimation method, and program. A failure estimation device ac...
Invention Light receiver, light-receiving circuit, and monitoring method. A light receiver (100) comprises ...
Invention Coating restoration device, coating restoration method, and program. This coating restoration dev...
Invention Information processing device, information processing method, and information processing program....
Invention Reference frequency signal transmission method and frequency transmission system. The present inv...
Invention Time reference system and time synchronization control method for same. [Solution] The present in...