ClearSign Technologies Corporation Provides First Quarter 2025 Update

TULSA, Okla., May 21, 2025 /PRNewswire/ -- ClearSign Technologies Corporation (Nasdaq: CLIR) ("ClearSign" or the "Company"), an emerging leader in industrial combustion and sensing technologies that support decarbonization, improve operational and energy efficiency, enable the use of hydrogen as a fuel and enhance safety while dramatically reducing emissions, today provides an update on operations for the quarter ended March 31, 2025."We had a productive first quarter of the year, which included expanding b ...