TULSA, Okla., April 19, 2023 -- ClearSign Technologies Corporation (Nasdaq: CLIR) ("ClearSign" or the "Company"), an emerging leader in industrial combustion and sensing technologies that improve energy, operational efficiency and safety while dramatically reducing emissions, announces the receipt of a purchase order to complete the detailed engineering of burners for two process heaters in a

Burner to be Installed into a Process Heater of a Global Chemical Company   TULSA, Okla., April 4, 2023 -- ClearSign Technologies Corporation (Nasdaq: CLIR) ("ClearSign" or the "Company"), an emerging leader in industrial combustion and sensing technologies that improve energy, operational efficiency and safety while dramatically reducing emissions, today announces the first sale of