Technology Companies

Company  County Number of employees Service
DeRoyal Industries Knox  785 Medical device manufacturing
Siemens Healthcare  Knox 502 Clinical imaging, preclinical and biomarker solutions
Radio Systems Corp. Knox 417 Pet products: PetSafe, Invisible Fence Brand, SportDOG
PerfectServe Knox 220 Unified communications platform that connects clinicians in any care setting
AESSEAL Inc. Blount 170 Design, manufacture of mechanical seals and seal support systems
Aqua-Chem Knox 150 Water purification technologies
Emerson Automation Solutions-Reliability Solutions Knox 145 Development of software/hardware products for predictive/protective maintenance and vibration analysis equipment
Protomet Anderson 145 Products developed specifically for the marine industry 
Electric Power Research Institute (EPRI) Knox 140 Technology solutions that enable the transformation of power systems to be more flexible, resilient and connected.
Fulton Bellows Knox 120 Hydro formed metal bellows and welded assemblies; thermostatic actuators and diaphragms
Centrus Technical Solutions Anderson 105 Provides technical solutions for the engineering, development, prototyping and manufacturing of complex engineered products
Uster Technologies Knox 100 Design, manufacture, install precision measuring instruments used for quality measurement and certification for the textile industry
ProNova Solutions Knox 95 Proton therapy treatment systems
Analysis and Measurement Services Corp. (AMS) Knox 75 Qualifying the instrumentation and control systems of nuclear power plants through laboratory and in-plant testing services and specialized testing equipment and advanced monitoring technologies
MS Technology Anderson 63 Microwave industrial heating equipment including metal melting/casting furnaces and fluidized bed heat treating equipment
Bandit Lites Knox 60 LED lighting fixtures for the entertainment industry
Technology for Energy Corp. Knox 59 Aircraft and helicopter on-the-wing ground support equipment, equipment for electric power metering, power quality, revenue protection of the electric power industry, monitoring equipment for nuclear power plants, X-ray diffraction analyzers 
GRIDSMART Technologies, Inc. Knox 55 Traffic management system deploying proprietary technology and software.
Northrop Grumman Remotec Anderson 53 Manufactures mobile robotic systems for inspecting and defusing explosives and other hazardous duty operations
Cryomagnetics Anderson 53 Design and development of superconducting magnets, cryogenic systems, control electronics
Perceptics Knox 52 Automatic license plate readers and other vehicle recognition equipment
Proton Power Loudon 46 Manufactures a patented renewable energy system that utilizes renewable biomass and waste sources to generate electricity, heat, synthetic fuels, hydrogen

Source:  Book of Lists, community websites 2020