ClearSign Technologies

ClearSign Technologies Corporation is a United States-based technology company focused on improving the efficiency and emissions performance of combustion systems. Its work is directed primarily at industrial and commercial boilers, furnaces, kilns, and related process-heating equipment, where the geometry and behavior of a burner flame can affect fuel consumption, heat transfer, pollutant formation, equipment size, and compliance costs. Rather than operating as a conventional fuel supplier or boiler manufacturer, ClearSign develops combustion-control architectures intended to be incorporated into existing or new industrial heating installations. The company was formed in Seattle, Washington, in 2008. Richard Rutkowski was its first chief executive officer and also served as chairman. Before joining ClearSign, Rutkowski had been associated with technology ventures including Microvision and Lumera. ClearSign initially operated as a development-stage enterprise, seeking to commercialize proprietary combustion technologies while building relationships with equipment manufacturers, industrial customers, and other parties in the energy and process-heating sectors. ClearSign became a publicly traded company through an initial public offering in 2012. According to the company, the offering raised approximately $13.8 million. The company also attracted attention for using exemptions available to emerging-growth companies under the Jumpstart Our Business Startups Act, including delaying adoption of certain public-company accounting requirements under the Sarbanes-Oxley framework. This approach was intended to reduce the administrative cost of raising capital while the company remained in an early commercialization phase. ClearSign's principal technologies include Duplex Burner Architecture and Electrodynamic Combustion Control. Duplex Burner Architecture is designed to shorten the burner flame substantially, with the company describing reductions of more than 80 percent. A shorter flame can allow greater thermal capacity within a given furnace or boiler arrangement and may help reduce operating costs and equipment constraints. Electrodynamic Combustion Control uses computer-controlled electric fields to influence flame shape and combustion behavior. The intended result is to improve combustion control and reduce the formation of pollutants in boilers, kilns, and furnaces. The company received industry recognition for its technology. Duplex Burner Architecture won the New Technology Development of the Year Award at the 2014 West Coast Oil & Gas Awards. In 2015, ClearSign was named Technology Company of the Year by Petroleum Economist. These distinctions helped position the company as an emissions and efficiency technology developer within the oil, gas, industrial-heating, and environmental-technology ecosystem, although awards do not by themselves establish the scale of commercial deployment. In December 2014, Rutkowski resigned as chief executive officer and was succeeded by board member Stephen Pirnat. In November 2019, ClearSign Combustion Corporation announced that it had changed its corporate name to ClearSign Technologies Corporation while retaining the Nasdaq ticker CLIR. The name change reflected the company's broader emphasis on combustion and emissions-control technologies rather than a single product description. ClearSign's business remains associated with technology development and commercialization in a capital-intensive industrial market. Its products are intended to address demands for lower emissions, improved energy efficiency, and modernization of combustion equipment. Publicly described financial information indicates that, as of September 2024, the company reported cash of approximately $14 million and no debt; over the preceding year it reported a cash burn of approximately $5.7 million and a substantial increase in revenue. Those figures describe a specific reporting period and should not be treated as a current valuation or a forecast. The available reference material does not establish a complete current executive roster, detailed geographic sales footprint, or the extent of commercial adoption across individual customer sites.

ClearSign Technologies was established in Seattle, Washington, in 2008 to develop technologies for controlling combustion and reducing emissions from industrial heating systems. The company emerged from a technology-entrepreneurial background associated with Richard Rutkowski, who became its first chief executive officer and chairman. Rutkowski had previously been involved with Microvision, a projection-technology company, and Lumera, a nanotechnology company. ClearSign's early objective was to commercialize combustion innovations that could improve the performance of boilers, furnaces, kilns, and related equipment without requiring the market to abandon established industrial heating processes. The company's technology development centered on the relationship between burner design, flame shape, heat transfer, and pollutant formation. Its Duplex Burner Architecture was designed to produce a substantially shorter flame than conventional arrangements. ClearSign has stated that the architecture can reduce flame length by more than 80 percent, potentially increasing thermal capacity in a constrained combustion chamber and lowering operating costs. Its other major technology, Electrodynamic Combustion Control, applies computer-controlled electric fields to influence the flame. The intended application is to control combustion behavior in boilers, kilns, and furnaces and to limit the formation of pollution during the combustion process. ClearSign pursued public financing while still in the development stage. In 2012 it completed an initial public offering that the company said raised $13.8 million. The offering and its subsequent reporting practices drew attention because ClearSign used emerging-growth-company exemptions created under the JOBS Act. In particular, the company delayed adoption of certain accounting standards required of larger public companies under the Sarbanes-Oxley framework. The approach reflected the financial and administrative constraints faced by early-stage technology companies seeking to fund research, product development, testing, and commercialization. Commercial and industry recognition followed. In 2014, ClearSign's Duplex Burner Architecture won the New Technology Development of the Year Award at the West Coast Oil & Gas Awards. Later that year, in December, Richard Rutkowski left the chief executive role. Stephen Pirnat, who had been a member of the board, succeeded him. In September 2015, Petroleum Economist named ClearSign Technology Company of the Year, providing further recognition within the energy-technology field. The company later broadened its corporate identity. On November 12, 2019, ClearSign Combustion Corporation announced that it had changed its name to ClearSign Technologies Corporation. The Nasdaq trading symbol, CLIR, remained unchanged. The renamed company continued to present itself as a developer of combustion and emissions-control technology rather than as a conventional industrial-equipment manufacturer. ClearSign's publicly described business has remained focused on bringing its technologies into industrial and commercial combustion applications. Potential customers and partners include operators of boilers, process furnaces, kilns, and other systems where fuel efficiency, flame geometry, nitrogen-oxide and other emissions, maintenance, and regulatory compliance are material considerations. The available reference material does not provide a complete list of customers, installed units, country-by-country revenue, or a definitive current management roster. Financial information cited for the period around September 2024 described approximately $14 million in cash and no debt. It also described trailing-year cash burn of approximately $5.7 million, a reported increase in revenue, and higher investment activity. These figures are period-specific and do not establish present financial condition. Overall, ClearSign's history is that of a publicly traded industrial-technology developer progressing from laboratory and development-stage combustion concepts toward commercial deployment in markets seeking more efficient and lower-emission process heating.

• 2019

  Corporate name changed

  [1]ClearSign Technologiesen.wikipedia.org

  ClearSign Combustion Corporation adopted the name ClearSign Technologies Corporation while retaining ticker CLIR.

• 2015

  Technology Company of the Year

  [1]ClearSign Technologiesen.wikipedia.org

  Petroleum Economist named ClearSign Technology Company of the Year.

• 2014

  Duplex Burner Architecture wins industry award

  [1]ClearSign Technologiesen.wikipedia.org

  The Duplex Burner Architecture received the New Technology Development of the Year Award at the West Coast Oil & Gas Awards.

• 2014

  Chief executive transition

  [1]ClearSign Technologiesen.wikipedia.org

  Richard Rutkowski resigned as chief executive officer and Stephen Pirnat succeeded him.

• 2012

  Initial public offering

  [1]ClearSign Technologiesen.wikipedia.org

  The company completed an initial public offering and stated that it raised approximately $13.8 million.

• 2008

  Company formed in Seattle

  [1]ClearSign Technologiesen.wikipedia.org

  ClearSign was formed in Seattle, Washington, to develop combustion and emissions-control technologies.

A specialized industrial-technology company developing combustion-control and emissions-reduction solutions for boilers, furnaces, kilns, and other process-heating equipment.

• Burner architecture

  Duplex Burner Architecture

  A burner design intended to produce a substantially shorter combustion flame. ClearSign has described flame-length reductions of more than 80 percent. The resulting configuration is intended to increase thermal capacity within industrial furnaces and boilers and may help reduce operating costs and equipment constraints. The technology received the New Technology Development of the Year Award at the 2014 West Coast Oil & Gas Awards.

• Combustion and emissions control

  Electrodynamic Combustion Control

  A computer-controlled system that uses electric fields to influence the shape and behavior of a combustion flame. ClearSign presents it as applicable to boilers, kilns, and furnaces, with the objective of improving combustion control and preventing or reducing the formation of pollutants during operation.

• 2019

  Corporate rebranding from ClearSign Combustion to ClearSign TechnologiesStrategy

  Background

  The company sought a corporate identity that represented its broader portfolio of combustion and emissions-control technologies.

  Action taken

  ClearSign Combustion Corporation changed its name to ClearSign Technologies Corporation and retained the Nasdaq ticker CLIR.

  Aftermath

  The company continued operating under the ClearSign Technologies name as a developer of industrial combustion technologies.

  Source

• 2012

  Use of emerging-growth-company exemptionsStrategy

  Background

  As a development-stage public company, ClearSign faced the cost of public-company reporting and compliance while seeking capital for technology development.

  Action taken

  The company used exemptions available under the JOBS Act and delayed adoption of certain accounting standards associated with the Sarbanes-Oxley framework.

  Aftermath

  The approach reduced some near-term compliance burdens and attracted attention as an early example of a U.S. company using the new emerging-growth-company provisions.

  Source

• 2021.04.28

  Reported2021.04.28

  ClearSign receives Chinese certification for boiler burner[2]ClearSign 获得中国锅炉燃烧器认证prnewswire.com

  ClearSign announced that it had received official Chinese government certification approving its 125hp (2-ton) fire tube boiler burner for sale in China. The certification enables the company to produce, market and sell the burner throughout the country.

Read more

1. 1ClearSign Technologiesen.wikipedia.org
2. 2ClearSign 获得中国锅炉燃烧器认证prnewswire.com