Nippon Telegraph and Telephone Corporation

Japan

 
Total IP 16,940
Total IP incl. subs 17,539 (+ 802 for subs)
Total IP Rank # 51
IP Activity Score 4.7/5.0    18,489
IP Activity Rank # 20
IP AS incl. subs 4.6/5.0    18,895
Stock Symbol
ISIN JP3735400008
Market Cap. 12061302144480.0  (JPY)
Industry Telecom Services
Sector Communication Services

Patents

Trademarks

6,113 0
152 0
10,675 0
0
 
Last Patent 2025 - Conversion device, conversion me...
First Patent 1976 - Reproducer for an eraseable vide...

Subsidiaries

26 subsidiaries with IP (734 patents, 68 trademarks)

28 subsidiaries without IP

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Latest Inventions, Goods, Services

2025 Invention Right-holder terminal, user terminal, and content usage method. Content data is registered in a ...
2023 Invention Transfer device and transfer method. A transfer device according to one aspect is a transfer devi...
Invention Header information transmission device and header information transmission method. A router (10B)...
Invention Header generation information transmission device and header generation information transmission ...
Invention Fine-tuning device and fine-tuning method. In a fine-tuning device (10), an initialization unit (...
Invention Voice conversion device, machine learning method, voice conversion method, and program. The prese...
Invention Operation device, operation method, and program. An operation device according to the present inv...
Invention Optical amplification device. An optical amplification device (1a) comprises: an excitation light...
Invention Evaluation device and evaluation method. An evaluation device (100) comprises: an acquisition uni...
Invention Network node, terminal, and communication method. This network node has: a transmission unit that...
Invention Information processing device, information system, information processing method, and program. Th...
Invention Delivery planning device, delivery planning method, and program. A delivery planning device accor...
Invention Currency processing device, currency processing method, and program. This currency processing dev...
Invention Learning device, estimation device, and learning method. The present invention provides a learnin...
Invention Control device, communication system, and switching method. This control device comprises: an inf...
Invention Optical communication system, optical communication device, and optical communication method. The...
Invention Optical communication system, optical transmission device, and optical communication method. One ...
2022 Invention Communication system, management control apparatus and control method. Provided is a communicati...
Invention Body temperature measurement device. A body temperature measurement apparatus includes a holding...
Invention Estimation apparatus, estimation method, and program. An estimation device for estimating a posi...
Invention Optical transceiver, communication apparatus and power supply control method. An optical transce...
Invention System, method and program for collecting data. An object of the present disclosure is to provid...
Invention Wireless access scheduling device, wireless access system and wireless access scheduling method. ...
Invention Time discount rate estimation apparatus, machine learning method, time discount rate analysis met...
Invention Management system, management method, and management program. A management system includes a con...
Invention Transmission apparatus. A transmission device includes: a first frequency converter configured t...
Invention Search apparatus, search method, and search program. A search device 1 for searching for an inve...
Invention Data processing apparatus, method, and program. A data processing apparatus according to one emb...
Invention Conversion device, conversion method, and conversion program. A conversion device (10) of an emb...
Invention Communication system, routing control apparatus, and routing control method. Provided is a commu...
Invention Wireless communication system, wireless communication method, and wireless communication device. ...
Invention Optical amplifier. The present disclosure is an optical fiber amplifier including: an amplificat...
Invention Secure computation apparatus, secure computation method, and program. The secure computation app...
Invention Secure computation apparatus, secure computation method, and program. A secure computation appar...
Invention Wireless communication method, wireless communication system, and transmission device. A wireles...
Invention Routing information generation device, program and routing information generation method. A rout...
Invention Collecting device, collecting method, and collecting program. A specification unit (15b) specifi...
Invention Long-term effect prediction apparatus, long-term effect prediction method, and program. An objec...
Invention Control signal multiplexing apparatus, control signal receiving apparatus, control signal multipl...
Invention Signal processing method, signal processing apparatus and communication system. A signal process...
Invention Bandwidth control device, bandwidth control method, bandwidth control program, and network system...
Invention Network information visualization device, network information visualization method, network infor...
Invention Current-voltage conversion device. A current-voltage conversion device that operates with low no...
2021 Invention Queue calculation system, queue calculation apparatus, queue calculation method, and program. Pr...
Invention Optical transmission apparatus and communication method. An optical transmission device includes...
Invention Control device, control method and control program. A host system handling unit receives an acco...
Invention Ferrule rotary mating part and optical switch. An object of the present invention is to provide ...
Invention Information processing system, information processing method and program. One aspect of the pres...