Nippon Telegraph and Telephone Corporation

Japan

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Total IP 17,341
Total IP incl. subs 17,937 (+ 797 for subs)
Total IP Rank # 50
IP Activity Score 4.7/5.0    18,083
IP Activity Rank # 20
IP AS incl. subs 4.6/5.0    18,465
Stock Symbol
ISIN JP3735400008
Market Cap. 12061302144480.0  (JPY)
Industry Telecom Services
Sector Communication Services

Patents

Trademarks

6,266 0
155 0
10,920 0
0
 
Last Patent 2025 - Optical connector connection str...
First Patent 1976 - Reproducer for an eraseable vide...

Subsidiaries

26 subsidiaries with IP (731 patents, 66 trademarks)

28 subsidiaries without IP

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Latest Inventions, Goods, Services

2024 Invention Communications device. This communication device comprises: a collection unit that collects the f...
Invention Estimation device. This estimation device comprises: a first distance information generation unit...
Invention Assignment device and assignment method. In an assignment device (10), an acquisition unit (15a) ...
Invention Storage device, information processing system, and information processing method. In this informa...
Invention Storage device, information processing system, and information processing method. Provided is a s...
Invention Compression test instrument. This compression test instrument (100) for an optical cable (20) hav...
Invention Communication control method and distributed antenna system. Provided is a communication control ...
Invention Communication control method and distributed antenna system. This communication control method is...
Invention Communication device. This communication device is provided with a collection unit that collects,...
Invention Information processing device, information processing method, and program. One aspect of the pres...
Invention Soft decision device, soft decision method, and program. According to the present invention, a co...
Invention Event processing device and event processing method. Event processing units (20A) to (20D) of thi...
Invention Calculation device, calculation method, and calculation program. This calculation device receives...
Invention Extension station, radio system, and communication method. The present invention provides an exte...
Invention Optical signal processing device. This wavelength conversion device (500) is provided with: a wav...
Invention Wireless quality prediction system, wireless quality prediction device, wireless quality predicti...
Invention Training device, conversion device, training method, conversion method, and program. This trainin...
Invention Acoustic synthesis system. The present invention relates to an acoustic synthesis system that rec...
Invention Acoustic synthesis system. The present disclosure is a system comprising: an up-sampling unit for...
Invention Test system, test method, and test device. A test system 5 includes: a first optical splitter P1 ...
Invention Information processing device, information processing method, and program. An information process...
Invention Method for identifying neutron beam type. The present disclosure provides a method for identifyin...
Invention Radio relay system, radio relay method, and control device. A radio relay system according to one...
Invention Wireless relay system and wireless relay method. A wireless relay system according to one embodim...
Invention Wireless relay system and wireless relay method. A wireless relay system according to an embodime...
Invention Access point. An access point according to one aspect of the present invention is provided with a...
Invention Photoelectric conversion device. This photoelectric conversion device comprises: a first light so...
Invention Photoelectric conversion device. This photoelectric conversion device is provided with: a first l...
Invention Selectable bit rate determination device and selectable bit rate determination method. A selectab...
2022 Invention Learning apparatus, learning method, and program. A learning apparatus for training a machine le...
Invention Optical fiber sensing device and optical fiber sensing method. An object of the present inventio...
Invention Communication apparatus and optical path opening method. A communication device is a first commu...
Invention Intra-server delay control device, intra-server delay control method, and program. A server dela...
Invention Wireless communication device, wireless communication method, and wireless communication system. ...
Invention Communication control apparatus and communication control method. A communication control device...
Invention Circuit breaker and interruption method. Provided is a breaker including a breaking unit for bre...
Invention Control apparatus, power supply system, control method and program. A control apparatus includes...
2021 Invention Violation prediction apparatus, violation prediction method and program. An object of the presen...
Invention Device for observing microorganisms. A microorganism observation device capable of continuously ...
Invention Computer system and control method therefor. An embodiment is a method for controlling a compute...
Invention Pseudo haptic sense presentation apparatus, pseudo haptic sense presentation method, and program....
Invention Area detection device, area detection method, and program. A region detection device (1) accordi...
Invention Analysis function imparting method, analysis function imparting device, and analysis function imp...
Invention Switch control apparatus, light feeding system and switch control method. A switch control appar...
Invention Optical communication apparatus, optical communication system and transmission method. An optica...
Invention Optical connector connection structure. Opposing connection end faces of optical fibers (1a and ...
Invention Inspection patterns and pattern evaluation method. In the inspection pattern T for inspecting a ...
Invention Optical transmission system, signal quality measurement apparatus and signal quality measurement ...