Nippon Telegraph and Telephone Corporation

Japan

Create a watch for Nippon Telegraph and Telephone Corporation
Total IP 16,252
Total IP incl. subs 16,823 (+ 763 for subs)
Total IP Rank # 50
IP Activity Score 4.6/5.0    15,078
IP Activity Rank # 29
IP AS incl. subs 4.5/5.0    15,417
Stock Symbol
ISIN JP3735400008
Market Cap. 12061302144480.0  (JPY)
Industry Telecom Services
Sector Communication Services

Patents

Trademarks

5,191 0
161 0
10,900 0
0
 
Last Patent 2025 - Optical receiver
First Patent 1976 - Reproducer for an eraseable vide...

Subsidiaries

26 subsidiaries with IP (704 patents, 59 trademarks)

28 subsidiaries without IP

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Latest Inventions, Goods, Services

2025 Invention Information processing device, pre-training data creation method, and program. This information p...
2023 Invention Data communication system, data communication method, relay device, relay method, and program. A...
2022 Invention Optical component, optical module and manufacturing method for optical module. An optical compon...
Invention Spin device. This spintronic device includes a semiconductor layer formed on a substrate, a sour...
Invention Position information calculation apparatus, position information calculation method, and program....
Invention Radio communication system, control apparatus, move destination position determination method, an...
Invention Pseudo force presenting apparatus, pseudo force presentingmethod, and program. A pseudo force se...
Invention Audio signal output apparatus. An acoustic signal output device includes a driver unit and a hou...
Invention Question recommendation apparatus, question recommendation method, and program. Provided is a te...
Invention Radio communication system, base station apparatus, and communication quality presentation method...
Invention Communication quality estimation system, communication quality estimation method and program. Th...
Invention Monitoring device, monitoring method, and monitoring program. A monitoring device (100) includes...
Invention Semiconductor device. A semiconductor device includes a substrate made of a semi-insulating comp...
Invention Control apparatus, control method and program. A control device according to one aspect of the p...
Invention Radio communication system, radio communication method, and base station apparatus. Provided is ...
Invention Speech recognition model learning apparatus, speech recognition model learning method, and progra...
Invention Mobile terminal cover. A mobile terminal cover for covering a mobile terminal comprising a camer...
Invention Key exchange system, equipment, method, and program. A key exchange system according to one aspe...
Invention Learning device, alternative series data extraction device, learning method, alternative series d...
Invention Traffic monitoring device, traffic monitoring method, and traffic monitoring program. A traffic ...
Invention Transfer device, transfer method, and transfer program. A transfer device (10) distributes a rec...
Invention Prerequisite relationship extraction device, prerequisite relationship extraction method, and pre...
Invention Charging device. A charging device 30 includes a lightning rod 31 and a charging circuit 32 conn...
Invention Time synchronization device, time synchronization system, and time synchronization method. A tim...
Invention Flying object with faraday cage. A drone with a Faraday cage includes a lattice-shaped conductor...
Invention Secure computation device, secure computation method, and program. There is provided a secure co...
Invention Landing assist device and landing assist method. A landing assist device includes a cart 30 mova...
Invention Communication apparatus, communication system and communication method. A communication device i...
Invention Secure search system, secure search apparatus, secure search method, and program. Provided is a ...
Invention Reduction electrode and manufacturing method of reduction electrode. A reduction electrode that ...
Invention Packet processing system. A packet processing system includes a server on which an NIC is mounte...
Invention Secure computation device, secure computation method, and program. A secure computation device i...
Invention Magnesium air battery and manufacturing method of it. A magnesium-air battery includes a positiv...
Invention Optical wireless communication system, optical wireless communication apparatus, optical wireless...
Invention Optical fiber module and its manufacturing method. The optical fiber module according to the pre...
Invention Biological tissue transdermal patch. A patch for sticking to a biological tissue includes a batt...
Invention Distributed learning system, model learning apparatus, distributed learning method, model learnin...
Invention Presentation system, presentation method, and presentation program. A presentation system accord...
Invention Optical receiver. Provided is an optical receiver which can be manufactured by a simple mounting...
Invention Laser module, control method for laser module and control device. A laser module of includes a s...
Invention Information processing device, information processing method, communication system, and program. ...
Invention Three-dimensional reconstruction device, three-dimensional reconstruction method, and program. A...
Invention Optical signal processing device, tap coefficient update method, program, and optical signal proc...
Invention Communication device and communication method. A communication device (10) includes an identific...
Invention Registration device, registration method, and program. A registration device (1) includes: one j...
Invention Identification device and identification method. An identification device (10) is an identificat...
Invention Monitoring system, monitoring method, and arithmetic device. A monitoring system (1) includes: a...
Invention Power supply and demand control apparatus, power supply and demand control method, and program. ...
2021 Invention Photosynthetic demultiplexing circuit and branch ratio adjustment method. To solve the problem, ...