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Our patented technologies, embedded in established OEM products as ClearSign Core™, and ClearSign Eye™ and other sensing configurations, enhance the performance of combustion systems and fuel safety systems in a broad range of markets, including the energy (upstream oil production and down-stream refining), commercial/industrial boiler, chemical, petrochemical, transport and power industries.

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  • Feb 23, 2018
    ClearSign Combustion Corporation Announces Pricing Of Public Offering Of Common Stock
  • Feb 22, 2018
    ClearSign Combustion Corporation Announces Proposed Public Offering of Common Stock
  • Jan 22, 2018
    ClearSign Announces Completion of First Enclosed Ground Flare Project
    Establishes Duplex Technology as best-in-class emissions control solution in $400 million potential domestic market
  • Dec 6, 2017
    ClearSign Announces Request to Withdraw S-1 Registration Statement
    Company to review alternate funding and strategic options
  • Dec 4, 2017
    ClearSign Receives Multi-Unit Order from Major Eastern Mediterranean /Middle East Refiner
    Operator Orders Multiple of Duplex Plug & Play™
  • Nov 27, 2017
    Qualification Tests of Duplex™ Technology Ordered by ExxonMobil Successfully Completed
    Evaluation Conducted at ClearSign's State-of-the-Art R&D Seattle Facility
  • Nov 20, 2017
    ClearSign Asia, LTD Formed
    Announces Letter of Intent with Largest Conglomerate in China for Investment, Accelerated Market Access and Support
  • Nov 9, 2017
    ClearSign Combustion Corporation Announces Third Quarter 2017 Results
  • Nov 6, 2017
    ClearSign Combustion Corporation Third Quarter 2017 Conference Call Announcement
  • Sep 19, 2017
    ClearSign Texas Refinery Project Successfully Concludes Operational Testing
    Company's Duplex Plug and Play™ Product Attains Performance Goals
  • Sep 6, 2017
    California Regulator Approves Funding for ClearSign Demonstration with Major Refiner
    South Coast Air Quality Management District, Torrance Refinery, and ClearSign to Collaborate on Duplex™ as Low Emission Solution
    • Photos 1
  • Aug 17, 2017
    ClearSign Combustion Corporation to Present at the Midwest IDEAS Conference in Chicago on August 30th
  • Aug 14, 2017
    ClearSign Combustion Corporation Announces Second Quarter 2017 Results
  • Aug 10, 2017
    ClearSign Combustion Corporation Announces Revised Second Quarter Conference Call Date on Monday, August 14, 2017
    Call to Occur at 5:00 PM ET
  • Jul 27, 2017
    ClearSign Combustion Corporation Second Quarter 2017 Conference Call Announcement
    Company to Provide Commercial and Operational Update
  • Jul 26, 2017
    California Regulator Proposes ClearSign Demonstration with Major Refiner
    South Coast Air Quality Management District Technology Committee Approves Project and Sends to Board for Final Approval
  • Jul 18, 2017
    ClearSign Announces New Senior Vice President of Business Development
    Industry Veteran to Leverage Experience and Momentum
  • Jul 13, 2017
    ClearSign Receives Order from Supermajor Oil Company to Qualify Duplex™ Technology
    First Step in Broad Adoption of Duplex™ Technology by Industry Leading Refiner
  • May 18, 2017
    ClearSign Combustion Corporation to Conduct Pilot Test with Chinese Heating Group
    Parties to Demonstrate Company's Duplex™ Technology for District Heating
  • May 11, 2017
    ClearSign Combustion Corporation Announces First Quarter 2017 Results
    CFO Steps Down
  • Apr 26, 2017
    ClearSign Combustion Corporation First Quarter 2017 Conference Call Announcement
  • Apr 20, 2017
    ClearSign's Initial Installation Assessment Completed by Aera Energy
    Applies for Operating Permit for First Unit
  • Apr 18, 2017
    ClearSign Secures Follow-On Order from California Refinery
    Order follows successful validation testing
  • Mar 24, 2017
    ClearSign 2016 CEO Shareholder Letter
    • Documents 1
  • Mar 16, 2017
    ClearSign Receives Follow-On Project from Aera Energy
    ClearSign's Duplex™ Technology to be Deployed on OTSG Using Waste Gas
    • Photos 1
  • Mar 10, 2017
    Allocation of Rights Offering Unit Price of $4.00
  • Feb 14, 2017
    ClearSign Combustion Corporation Announces Full Year 2016 Results
    Company Positions Itself to Capitalize on new Duplex Plug & Play™ Product
    • Photos 1
  • Feb 7, 2017
    ClearSign Introduces Duplex Plug & Play Burner
    Streamlined Manufacturing and Installation Achieves Revolutionary Performance
    • Photos 1
  • Jan 25, 2017
    ClearSign Combustion Corporation Closes Rights Offering for Gross Proceeds of $9.6 Million
    Full Year 2016 Results Call Scheduled for February 14
    • Photos 1
  • Jan 24, 2017
    ClearSign Combustion Corporation Updates Information on Rights Offering
    NASDAQ Approves listing of Warrants
    • Photos 1
  • Dec 7, 2016
    ClearSign Combustion Corporation Announces Rights Offering
    Hosting Conference Call on Tuesday, December 13th at 4:30pm ET
    • Photos 1
  • Nov 30, 2016
    ClearSign Combustion Corporation to Present at the LD Micro Conference in Los Angeles on December 8th
    • Photos 1
  • Nov 28, 2016
    ClearSign Successfully Completes Follow On Order for Aera Energy
    Duplex™ Performance Proven by Third Party Source Test at 3-5 ppm NOx
    • Photos 1
  • Nov 17, 2016
    ClearSign Awarded Boiler Retrofit Project from Tricor
    Duplex™ Retrofit of Water Tube Boiler First Win in Addressable Market of $1.7 Billon for Packaged Boilers
    • Photos 1
  • Nov 14, 2016
    ClearSign Combustion Corporation Announces Third Quarter 2016 Results
    Completed Installations and Pursuing Sales in 3 Market Verticals
    • Photos 1
  • Nov 9, 2016
    ClearSign to Present at the 94th Petroleum Environmental Research Forum (PERF) Meeting
    Meeting Focus on Emerging Trends in Water and Air for the Energy Industry
    • Photos 1
  • Nov 4, 2016
    ClearSign Combustion Corporation Third Quarter 2016 Conference Call Announcement
    • Photos 1
  • Nov 2, 2016
    ClearSign Combustion Corporation to Present at the Southwest IDEAS Conference in Dallas on November 16th
    • Photos 1
  • Oct 24, 2016
    ClearSign Announces Successful Completion of Tricor Refinery Heater Project
    Duplex™ Source Test Confirms NOx and CO Levels Below Lowest District Requirements
    • Photos 1
  • Oct 18, 2016
    ClearSign Announces Turnover of Pilot Test Heater to California Refiner
    Testing Confirms Duplex™ Best Available Control Technology Performance Over a Variety of Operating Conditions
    • Photos 1
  • Sep 29, 2016
    ClearSign Opens Houston Sales Office
    Regional Presence will serve demand from Oil and Gas Companies
    • Photos 1
  • Sep 21, 2016
    ClearSign Announces Successful Completion of Phase I Flare Installation
    Successful Test Results Confirmed
    • Photos 1
  • Sep 13, 2016
    ClearSign Presents Successful Refinery Process Heater Retrofit Results at American Flame Research Committee's Annual Industrial Combustion Symposium
    Emerging provider of industrial combustion technologies showcases unmatched NOx emissions reductions data
    • Photos 1
  • Aug 23, 2016
    ClearSign Combustion Corporation Announces Executive Reassignments to Accelerate Development and Support Anticipated Customer Projects
    • Photos 1
  • Aug 16, 2016
    ClearSign Combustion Corporation to Present at the Midwest IDEAS Conference in Chicago
    • Photos 1
  • Aug 11, 2016
    ClearSign Combustion Corporation Announces Second Quarter 2016 Results
    • Photos 1
  • Aug 5, 2016
    ClearSign Combustion Corporation Second Quarter 2016 Conference Call Announcement
    • Photos 1
  • Aug 4, 2016
    ClearSign Announces First Major Order in Flare Application
    The Company Announces Significant Follow-On Order While Nearing Completion of Initial Wellhead Flare Testing
    • Photos 1
  • Jul 18, 2016
    ClearSign Announces Achievement of Refinery Milestone
    ClearSign Combustion Corporation Announces Completion of Refinery Testing
    • Photos 1
  • Jun 14, 2016
    ClearSign Combustion Corporation to Present at the East Coast IDEAS Conference in Boston
    • Photos 1
  • May 12, 2016
    ClearSign Combustion Corporation Announces First Quarter 2016 Results
    • Photos 1
  • May 5, 2016
    ClearSign Combustion Corporation First Quarter 2016 Conference Call Announcement
    • Photos 1
  • Apr 4, 2016
    ClearSign Awarded Contract with Major Canadian Oil Producer
    • Photos 1
  • Mar 29, 2016
    David Goodson Steps Down from ClearSign's Board of Directors
    Mr. Goodson intends to focus on other projects
    • Photos 1
  • Mar 3, 2016
    ClearSign Combustion Corporation Announces Full Year and Fourth Quarter 2015 Results
    • Photos 1
  • Feb 29, 2016
    ClearSign Combustion Corporation to Present at 28th Annual ROTH Conference
    • Photos 1
  • Feb 25, 2016
    ClearSign Combustion Corporation Fourth Quarter and Full Year 2015 Conference Call Announcement
    • Photos 1
  • Feb 11, 2016
    ClearSign Announces Duplex™ Order for Wellhead Enclosed Flare
    Multi-Unit Order Anticipated Upon Validation of Initial Installation
    • Photos 1
  • Jan 21, 2016
    ClearSign Combustion Issues Annual Letter to Shareholders
    • Photos 1
  • Nov 12, 2015
    ClearSign Combustion Corporation Announces Third Quarter 2015 Results
    • Photos 1
  • Nov 5, 2015
    ClearSign Combustion Corporation Third Quarter Results Conference Call Announcement
    • Photos 1
  • Nov 4, 2015
    ClearSign to Present at the Southwest IDEAS Investor Conference on November 19 in Dallas
    • Photos 1
  • Oct 8, 2015
    ClearSign Named a Finalist for Platts Global Energy "Commercial Application of the Year" Award
    • Photos 1
  • Sep 30, 2015
    ClearSign Selected by Delek for Process Optimization
    Company enters Texas market to support 75,000-barrel-per-day refinery operation
    • Photos 1
  • Sep 24, 2015
    ClearSign Promotes Dr. Roberto Ruiz to Chief Operating Officer; Opens Engineering and Sales Office in Tulsa
    • Photos 1
  • Sep 18, 2015
    Petroleum Economist Honors ClearSign With "Technology Company Of The Year" Award
    • Photos 1
  • Sep 14, 2015
    ClearSign Announces Initial Commercial Order with Aera Energy LLC Under Multi-Unit, Multi-Year Purchase Option
  • Sep 10, 2015
    ClearSign to Present at the American Flame Research Committee (AFRC) in Salt Lake City
  • Aug 18, 2015
    ClearSign to Present at the Midwest IDEAS Investor Conference on August 27th in Chicago
    • Photos 1
  • Aug 13, 2015
    ClearSign Announces Second Quarter 2015 Results
    Company reports significant progress towards initial commercialization in end market applications
    • Photos 1
  • Aug 11, 2015
    ClearSign Announces Installation and Operation of Duplex™ Technology at California Refinery
    • Photos 1
  • Aug 7, 2015
    ClearSign Signs Agreement with Tesoro Refining & Marketing Company LLC
    • Photos 1
  • Aug 6, 2015
    ClearSign Combustion Corporation Second Quarter Results Conference Call Announcement
    • Photos 1
  • May 29, 2015
    ClearSign to Present at the East Coast IDEAS Investor Conference on June 3rd in Boston
    • Photos 1
  • May 26, 2015
    Donald Kendrick Joins ClearSign Research and Development Organization
    Combustion and product development expert to join ClearSign's Senior Management Team.
    • Photos 1
  • May 14, 2015
    ClearSign Combustion Corporation Announces Q1 Results
    • Photos 1
  • May 13, 2015
    ClearSign Awarded Another Once-Through Steam Generator Project for Enhanced Oil Recovery
    Commercial Order Received from Southern California Oil Producer
    • Photos 1
  • May 12, 2015
    ClearSign Field Test at Aera Validates Savings in Operating Costs with Industry-Leading Emissions
    Increase in efficiency validated; Duplex™ Technology now operating at 52 Million Btu/h
    • Photos 1
  • May 8, 2015
    ClearSign Demonstrates Duplex™ Technology to Senior Members of the American Petroleum Institute
    Executives from the global petroleum industry attend event at ClearSign
    • Photos 1
  • May 6, 2015
    ClearSign Combustion Corporation First Quarter Results Conference Call Announcement
    • Photos 1
  • Feb 26, 2015
    ClearSign Combustion Corporation Announces 2014 Results
    • Photos 1
  • Feb 19, 2015
    ClearSign Combustion Corporation Fourth Quarter and Fiscal Year 2014 Results Conference Call Announcement
    • Photos 1
  • Feb 17, 2015
    ClearSign Technology Achieves Key Milestone in Full-Scale Field Demonstration
    Duplex™ Technology meets San Joaquin Valley's strict air quality regulations while improving operational performance in an oil-field steam generator
  • Feb 12, 2015
    ClearSign Combustion Corp. Announces Completion of Public Offering, Including the Exercise of the Underwriter's Entire Overallotment Option
  • Feb 10, 2015
    Jeffrey L. Ott Joins ClearSign Board of Directors
  • Feb 5, 2015
    ClearSign Announces Pricing of Public Offering of Common Stock
  • Jan 22, 2015
    ClearSign Announces Agreement to Install Duplex Technology in Third Oil & Gas Operation
    New refinery customer joins Tricor, LLC and Aera Energy LLC -- looks to ClearSign to reduce environmental impact at California refinery while improving bottom line.
  • Jan 14, 2015
    ClearSign Inks Deal for Emissions Control at California Refinery
    Tricor Refining, LLC selects Duplex™ technology for superior, profitable emissions control
  • Dec 11, 2014
    ClearSign Names Stephen E. Pirnat As Chief Executive Officer
  • Nov 13, 2014
    ClearSign Combustion Corporation Announces Third Quarter 2014 Results
    ClearSign demonstrated Duplex technology at 5MMBtu/h industrial scale in May; signed field test agreement in August;
  • Nov 6, 2014
    ClearSign Combustion Corporation Third Quarter 2014 Results Conference Call Announcement
  • Oct 22, 2014
    ClearSign Wins New Technology Development Of The Year Award At 2014 West Coast Oil & Gas Awards
  • Oct 2, 2014
    ClearSign Selected As Finalist In 2014 Platts Global Energy Awards
  • Sep 15, 2014
    ClearSign To Present At Singular Research 9th Annual Best Of The Uncovereds Conference 2014
  • Sep 4, 2014
    ClearSign Named Finalist In 2014 West Coast Oil & Gas Awards
  • Aug 19, 2014
    ClearSign Contracts with Aera Energy LLC to Demonstrate Next-Generation NOx Emissions Control Technology in California's San Joaquin Valley
    Company's technology aims to improve environmental performance while reducing operating costs of steam generators for Enhanced Oil Recovery
  • Aug 12, 2014
    ClearSign Combustion Corporation Announces Second Quarter 2014 Results
    Company highlights milestones including scale demonstration and field test agreement for Duplex™ Tile technology and the addition of Plum Creek to Solid Fuel Working Group.
  • Aug 5, 2014
    ClearSign Combustion Corporation Second Quarter 2014 Results Conference Call Announcement
  • Jul 10, 2014
    ClearSign Establishes Solid Fuel Working Group with Sponsorship from Industry Leaders
    Covanta and Great River Energy join working group to help accelerate commercialization of Electrodynamic Combustion Control™ technology.
  • Jun 19, 2014
    ClearSign To Present Emissions Reduction Solution At Air & Waste Management Association Annual Conference & Exhibition
    CTO Joseph Colannino to showcase how ClearSign can combine groundbreaking NOx emissions performance with improvements to energy efficiency and flame shape
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  • Investors Home
  • News / Events
    • Company News
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  • Company Information
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  • Stock Information
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  • Financial Information
    • Financials
    • Annual Reports
    • Proxy
  • SEC Filings
    • All SEC Filings
    • Section 16 Filings
  • Corporate Governance
    • Board of Directors
    • Board Committees
    • Governance Documents
ClearSign Combustion Corporation