ClearSign Technologies Corporation designs and develops products and technologies to enhance operational performance, energy efficiency, emission reduction, safety, and overall cost-effectiveness of industrial and commercial systems in the United States and the People's Republic of China. Its ClearSign Core Burner Technology consists of an industrial burner body and a downstream porous ceramic structure or metal flame stabilizing device; ClearSign Core Plug & Play technology provides direct burner replacement for traditional refinery process heaters; and ClearSign Eye Flame Sensor, an electrical flame sensor for industrial applications. The company also provides ClearSign Core Boiler Burner; and ClearSign Core Flaring Burners technologies. It serves energy, institutional, commercial and industrial boiler, chemical, and petrochemical industries. The company was formerly known as ClearSign Combustion Corporation and changed its name ClearSign Technologies Corporation in November 2019. ClearSign Technologies Corporation was incorporated in 2008 and is headquartered in Tulsa, Oklahoma.

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• [06/05/2026 08:01 PDT] CLIR Expected to Trade Up After Bullish Patterns Develop
• [06/04/2026 08:10 PDT] CLIR Expected to Trade Up After Bullish Patterns Develop
• [05/04/2026 11:07 PDT] ClearSign Technologies Corporation (NASDAQ:CLIR), Down By 100% ($5.29) From $5.29 After BUYINS.NET Report Predicted Stock Would Go Down Due To Bearish Conditions
• [04/29/2026 07:10 PDT] CLIR Expected to Trade Up After Bullish Patterns Develop
• [04/14/2026 09:26 PDT] CLIR Expected to Trade Down After Bearish Patterns Develop