ClearSign Technologies Corp is engaged in providing solutions to some of the pressing productivity, energy efficiency, and pollution problems affecting the energy, oil, and gas production, boiler, and processing industries. It believes that its patented ClearSign Core technology can enhance the performance of combustion systems in a broad range of markets, including the energy (upstream oil production and downstream refining), institutional, commercial, and industrial boiler, chemical, and petrochemical industries. The company offers products that include process burners, boiler burners, flares, and ClearSign Eye.