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MGT Capital Investments, Inc. engages in cryptocurrency mining business in the United States. It also leases space to other bitcoin miners; and provides hosting services for owners of mining equipment. The company was incorporated in 1977 and is headquartered in Raleigh, North Carolina.

Network-1 Technologies, Inc. engages in the development, licensing, and protection of intellectual property assets. The company owns 100 patents, including the Cox patent portfolio related to enabling technology for identifying media content on the Internet; M2M/IoT patent portfolio related to enabling technology for authenticating, provisioning, and using embedded sim technology in IoT, machine-to-machine, and other mobile devices, such as smartphones, tablets, and computers, as well as automobiles; and HFT patent portfolio covering technologies related to high frequency trading that addresses technological problems associated with speed and latency, and provide critical latency gains in trading systems. Its patents also comprise the Mirror Worlds patent portfolio related to foundational technologies that enable unified search and indexing, displaying, and archiving of documents in a computer system; and the remote power patent covering the delivery of power over Ethernet cables for the purpose of remotely powering network devices, such as wireless access ports, IP phones, and network-based cameras. The company was formerly known as Network-1 Security Solutions, Inc. and changed its name to Network-1 Technologies, Inc. in October 2013. Network-1 Technologies, Inc. was incorporated in 1990 and is headquartered in New Canaan, Connecticut.

Pendrell Corporation invests in, acquires, and develops businesses with technologies that are protected by intellectual property (IP) rights in the United States. It manages three IP licensing programs comprising memory and storage technologies, digital media, and digital cinema. The company's digital media program is supported by patents and patent applications to protect against unauthorized duplication and use of digital content during the transfer of the digital content. It grants digital media licenses to manufacturers, distributors, and providers of consumer products. The company's memory and storage technologies are used in electronic devices, including licensees of flash memory component suppliers, solid state disk manufacturers, and device vendors. Its digital cinema program is supported by DRM Patents and patent applications designed to protect against unauthorized creation, duplication and use of digital cinema content that is distributed to movie theaters worldwide. Its digital cinema licensees include distributors and exhibitors of digital content, such as motion picture producers, motion picture distributors, and equipment vendors. The company was formerly known as ICO Global Communications (Holdings) Limited and changed its name to Pendrell Corporation in July 2011. Pendrell Corporation was founded in 1995 and is headquartered in Kirkland, Washington.

Quarterhill Inc., together with its subsidiaries, operates in intelligent transportation system business in Canada and internationally. The company offers riteSuite, which offers mobility solutions, such as all-electronic tolling, dynamic pricing, agency interoperability, hosted mobility solutions, and machine learning; back-office solutions, which offers account management, customer service, violation processing, and technical services operations; roadside solutions, which offers onsite and remote maintenance and field operations services, including tolling facility support, lane equipment control, and cash management services; and international road dynamics products and services, which offers automated truck weigh stations, toll road systems and equipment, red light and speed enforcement systems, and traffic management and safety systems. It also provides VectorSense, a tire sensor suite; Vehicle Information-In-Motion traffic intelligence system, an integrated traffic control system; permanent Weigh-InMotion systems; portable slow speed Weigh-In-Motion systems; portable wheel load scales; traffic data collection products, vehicle and axle detection equipment, and automated vehicle identification services and equipment; and other hardware and software products and offerings. The company was formerly known as Wi-LAN Inc. and changed its name to Quarterhill Inc. in June 2017. Quarterhill Inc. was incorporated in 1992 and is headquartered in Toronto, Canada.

Research Frontiers Incorporated engages in the development and marketing of technology and devices to control the flow of light worldwide. It develops and licenses suspended particle device (SPD-Smart) light-control technology to companies that manufacture and market the SPD-Smart chemical emulsion, light-control film made from the chemical emulsion, the light-control panels made by laminating the film, and electronics to power end-products incorporating the film, as well as lamination services for and the end-products, such as windows, skylights, and sunroofs. The company's SPD-Smart light-control technology is used in various product applications, including windows, sunshades, skylights, and interior partitions for homes and buildings; automotive windows, sunroofs, sun-visors, sunshades, rear-view mirrors, instrument panels, and navigation systems; aircraft windows; museum display panels, and eyewear products; and flat panel displays for electronic products. It serves architectural, automotive, marine, and aerospace and appliance applications. The company was incorporated in 1965 and is headquartered in Woodbury, New York.