Order Entails Full System Retrofit TULSA, OKLAHOMA / ACCESS Newswire / February 17, 2026 / ClearSign Technologies Corporation (Nasdaq:CLIR) ("ClearSign" or the "Company"), a leader in advanced combustion and sensing technologies that help industrial operators dramatically reduce emissions, increase efficiency and safety, and support the use of cleaner fuels including hydrogen, today announces it received an engineering order

Burner Sold by Heater Manufacturer Devco Process Heaters TULSA, Okla., November 4, 2025 -- ClearSign Technologies Corporation (Nasdaq: CLIR) (“ClearSign” or the “Company”), a leader in advanced combustion and sensing technologies that help industrial operators dramatically reduce emissions, increase efficiency and safety, and support the use of cleaner fuels including hydrogen, today announces that it has

Burner Sold by Heater Manufacturer Devco Process Heaters TULSA, Okla., October 28, 2025 -- ClearSign Technologies Corporation (Nasdaq: CLIR) (“ClearSign” or the “Company”), a leader in advanced combustion and sensing technologies that help industrial operators dramatically reduce emissions, increase efficiency and safety, and support the use of cleaner fuels including hydrogen, today announces that it

TULSA, Okla., October 23, 2025 -- ClearSign Technologies Corporation (Nasdaq: CLIR) (“ClearSign” or the “Company”), a leader in advanced combustion and sensing technologies that help industrial operators dramatically reduce emissions, increase efficiency and safety, and support the use of cleaner fuels including hydrogen, today announces it received an engineering order for a fourth low-emission retrofit flare

Planned Retrofit of Two Process Heaters at a California refinery Underscores Growing Adoption of ClearSign's Higher Efficiency, Low-Emission Combustion Solutions TULSA, OK / ACCESS Newswire / October 7, 2025 / ClearSign Technologies Corporation (Nasdaq:CLIR) ("ClearSign" or the "Company"), a leader in advanced combustion and sensing technologies that help industrial operators dramatically reduce emissions, increase efficiency and safety, and

Petrochemical Client Requesting Performance Mapping for Future Deployment  TULSA, Okla., September 23, 2025 -- ClearSign Technologies Corporation (Nasdaq: CLIR) (“ClearSign” or the “Company”), a leader in advanced combustion and sensing technologies that help industrial operators dramatically reduce emissions, increase efficiency and safety, and support the use of cleaner fuels including hydrogen, today announces that it has

Project Comprised of 36 ClearSign Core™ Process Burners in One Heater                                                                       TULSA, Okla., September 17, 2025 -- ClearSign Technologies Corporation (Nasdaq: