Nippon Telegraph & Telephone Corp. operates as a holding company which engages in the provision of telecommunication services. It operates through the following business divisions: Regional Communications, Long-Distance and International Communications, Mobile Communications, Data Communications, and Others. The Regional Communications division offers domestic intra-prefectural communication services such as fixed voice-related, Internet protocol (IP), and packet communications services; and sells telecommunications equipment. The Long Distance and International Communications division deals with the domestic intra-prefectural and international communications, and system integration services. The Mobile Communications division provides the mobile voice-related, IP, and packet communications services. The Data Communications division covers the system integration and network system services. The Other division engages in the real estate, finance, engineering, system integration and data processing services, and development of technologies and shared operations. The company was founded on August 1, 1952 and is headquartered in Tokyo, Japan.

Nortel Networks has hung up on the telecom sector. Once one of the largest makers of telecommunications equipment in North America, it filed for bankruptcy protection in 2009 and is in the process of liquidating its assets. The company made core network switching, wireless, and optical systems for network operators. Its wireline and enterprise network equipment included systems for digital voice and data switching, routing, and call center communications. Wireless products included cellular base stations and controllers. The company also made such long-haul fiber-optic products as multiplexers. Nortel is currently focused on selling off its remaining businesses and intellectual property and winding down all operations. Today, Nortel's Metro Ethernet Networks segment provides carrier Ethernet switching, optical networking, and multi-service switching products.

Glimmerglass Networks, Inc. develops and markets intelligent optical switching solutions for the telecommunications industry and government. The company offers optical switches to create, monitor, and protect wavelengths in networks supporting land-based and undersea telecommunications systems, enterprise data networks, Internet peering exchanges, government networks, and video networks. Its optical switching systems also enable the distribution of information and the remote configuration of optical connections. The company's products are used in data center, telecom central office, undersea cable, peering exchange, and government and defense applications. Glimmerglass Networks, Inc. was founded in 2000 and is headquartered in Hayward, California.

As Japan’s sole independent administrative institution specializing in the field of information and communications technology, the National Institute of Information and Communications Technology (NICT) is charged with promoting ICT sector as well as research and development in ICT, which drives economic growth and creates an affluent, safe and secure society.

Ciena is the network specialist. They collaborate with customers worldwide to unlock the strategic potential of their networks and fundamentally change the way they perform and compete. With focused innovation, Ciena brings together the reliability and capacity of optical networking with the flexibility and economics of Ethernet, unified by a software suite that delivers the industry's leading network automation. They routinely post recent news, financial results and other important announcements and information about Ciena on their website.

Dell, Inc. engages in the manufacture of electronic devices. Its products include laptops, desktops, tablets, thin clients, printers, monitors, software, workstations and accessories. The company was founded by Michael Saul Dell on February 1, 1984 and is headquartered in Round Rock, TX.

RPX Clearinghouse LLC, part of RPX Corp., is an American company located in San Francisco, CA. The firm provides investment services investment.

Lightmatter uses light to create photonic compute chips specialized for AI. Untethered from the limits of Moore’s Law and Dennard Scaling, they’ve rewritten the rules of processor performance scaling by combining electronics, photonics, and new algorithms to create a next-generation computing platform purpose-built for artificial intelligence. Lightmatter is building the engines that will power discoveries, drive progress, and reduce our impact on the planet.

Nanjing Guangzhiyuan Technology Co., Ltd., established on 2020-09-18, Business scope includes licensed projects:Technology Import and Export;Import and export(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,Specific business projects are subject to approval results) General project:Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Information Technology Consulting Services;Mechanical equipment research and development;software development;internet data service;Manufacturing of electronic components;Manufacturing of computer software, hardware and peripheral equipment;Engineering and Technology Research and Experimental Development;Integrated circuit chip design and service;Integrated circuit chip and product manufacturing;Integrated circuit chips and product sales;Mechanical and electrical equipment manufacturing;Wholesale of electronic components;Sales of electronic components and electromechanical components;Sales of Advanced Power Electronics Devices;Sales of electronic special equipment;Optoelectronic Device Sales;Communication equipment sales;Instrument sales;IC Design;integrated circuit manufacturing;IC sales;Technology intermediary service;Artificial intelligence industry application system integration service;Artificial intelligence public service platform technical consulting services;Conference and Exhibition Services(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

WSOU Investments LLC engages in leveraging its proprietary technology and management experience to inventors and patent owners maximize their patents. It takes on license negotiations, infringement, and consultancy services for patent purchases and dispositions. The company is headquartered in Waco, TX.

Advanced Micro Foundry Pte Ltd. is a Singaporean private company located in Singapore that manufactures semiconductors. It was founded in 2017.

Fujitsu Ltd. engages in the provision of information technology (IT) services. It operates through the following segments: Technology Solutions, Ubiquitous Solutions, and Device Solutions. The Technology Solutions segment provides system integration, consulting, outsourcing, cloud, network, and system support services. It also offers system and network products such as servers, storage systems, software, network management systems, and mobile base stations. The Ubiquitous Solutions segment covers personal computers (PCs). The Device Solutions segment includes electronic components such as semiconductor packages and batteries. The company was founded on June 20, 1935 and is headquartered in Tokyo, Japan.

Manufactures aircraft and aircraft engines

AT&T Inc. is an American multinational conglomerate holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. It is the world's largest telecommunications company, the largest provider of mobile telephone services, and the largest provider of fixed telephone services in the United States through AT&T Communications. Since June 14, 2018, it is also the parent company of mass media conglomerate WarnerMedia, making it the world's largest media and entertainment company in terms of revenue. As of 2018, AT&T is ranked #9 on the Fortune 500 rankings of the largest United States corporations by total revenue.

Alcatel-Lucent SAS engages in the provision of communications solutions to telecommunications companies, Internet service and data providers. It develops and integrates technologies, applications and services to offer global communications services. The company was founded in 1976 and is headquartered in Boulogne-Billancourt, France.

Provenance Asset Group LLC is an American private company located in Essex that provides patent right services.

Innovance is a 100% employee owned company (ESOP) and the holding company for subsidiaries, Lou-Rich, Inc. (www.lou-rich.com) and Almco, Inc. (www.almco.com). Lou-Rich provides contract engineering and manufacturing services. Almco is a state-of-the-art manufacturer of industrial deburring, parts washing, and vibratory metal finishing equipment. For more information on Innvoance, Inc.

Infinera Corporation provides optical networking systems based on photonic integration technology in the United States. Its digital transport node (DTN) system utilizes the photonic integrated circuit (PIC) technology to enable digital processing and management of data with the capability to generate wavelength division multiplexing wavelengths and to add, drop, switch, manage, protect, and restore network traffic digitally. The company's PICs transmit and receive 100 Gigabits per second of optical capacity and incorporate the functionality of approximately 60 discrete optical components into a pair of indium phosphide chips. The DTN System is used to enable optical to electrical to optical conversions at every network access point to provide communications service providers with the ability to digitally process the information being transported across their optical networks. It also offers a range of support offerings, including 24/7/365 hardware and software technical support, installation and deployment services, spares management, first line maintenance services, on-site technical services, professional services, product technical training, and extended product warranties. The company offers its products to operators of optical networks, including telecom carriers, cable operators, and Internet or content service providers. Infinera Corporation, formerly known as Zepton Networks, was founded in 2000 and is headquartered in Sunnyvale, California.

KDDI Corp. engages in the telecommunications business. It operates through the following segments: Personal Services, Business Services, and Others. The Personal Services segment provides communication services for individuals and energy; educational services; commerce; finance and settlement; and entertainment services. The Business Services segment provides communication services, ICT solutions, data center services for companies The Others segment handles communication equipment construction and maintenance, and research and development of information and communication technology. The company was founded by Kazuo Inamori on June 1, 1984 and is headquartered in Tokyo, Japan.