For the Inventor, By the Inventor

Enter assignee name

Seattle, WA, United States of America

Clearsign Combustion Corporation

USPTO Granted Patents = 83

% Expired Patents = 79.5

EPO Patents = 3

Trademarks = 3

Forward Citations = 898

Loading Chart...

Loading Chart...

24 inventors (with patents filed for the assignee):

Christopher A Wiklof (72 out of 211 patents)

Joseph Colannino (60 out of 72 patents)

Igor A Krichtafovitch (40 out of 70 patents)

4. Douglas Wayne Karkow (29 out of 48 patents)

5. David B Goodson (23 out of 31 patents)

6. Robert E Breidenthal (19 out of 34 patents)

7. Tracy A Prevo (13 out of 13 patents)

8. Thomas S Hartwick (6 out of 6 patents)

9. Roberto G Ruiz (5 out of 14 patents)

10. Jesse Dumas (4 out of 9 patents)

11. Richard F Rutkowski (4 out of 4 patents)

12. James Kyle Dansie (4 out of 15 patents)

13. Vincenzo Casasanta, Iii (2 out of 52 patents)

14. Kraig K Anderson (2 out of 20 patents)

15. Donald W Kendrick (2 out of 30 patents)

Core Competencies:

Electrodynamic Control

Low NOx Burner

Flame Holder

Combustion System

Fuel Combustion

Ionizer

Heat Transfer

Fluid Heater

Combustor

Electrode

Acoustic Control

Fuel Types

83 patents: Sort by Forward Citations

1. 11221137 - Field installed perforated flame holder and method of assembly and installation (2022-01-11),

2. 10619845 - Cooled ceramic electrode supports (2020-04-14),

3. 10571124 - Selectable dilution low NOx burner (2020-02-25),

4. 10539326 - Duplex burner with velocity-compensated mesh and thickness (2020-01-21),

5. 10514165 - Perforated flame holder and system including protection from abrasive or corrosive fuel (2019-12-24),

6. 10458649 - Horizontally fired burner with a perforated flame holder (2019-10-29),

7. 10458647 - Adaptor for providing electrical combustion control to a burner (2019-10-29),

8. 10422523 - Ionizer for a combustion system (2019-09-24),

9. 10386062 - Method for operating a combustion system including a perforated flame holder (2019-08-20),

10. 10364984 - Burner system including at least one coanda surface and electrodynamic control system, and related methods (2019-07-30),

11. 10364980 - Control of combustion reaction physical extent (2019-07-30),

12. 10359213 - Method for low NOx fire tube boiler (2019-07-23),

13. 10359189 - Electrodynamic combustion control with current limiting electrical element (2019-07-23),

14. 10337729 - Fuel combustion system with a perforated reaction holder (2019-07-02),

15. 10295185 - Flame visualization control for electrodynamic combustion control (2019-05-21),

Company Overview

Clearsign Combustion Corporation, based in Seattle, WA, specializes in advanced combustion technologies aimed at enhancing efficiency and reducing emissions in industrial applications. The company focuses on electrodynamic combustion systems, which utilize innovative techniques such as electrodynamic control and low NOx burners to optimize fuel combustion and heat transfer. Their solutions are designed to improve combustion performance while minimizing environmental impact, making them a key player in the transition towards cleaner energy solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

83 Patents

#27 in Seattle, WA

#81 in Washington

#4,473 in US

#9,158 in the World

Seattle, WA, United States of America

Clearsign Combustion Corporation

Forward Citations = 898

24 inventors:

Christopher A Wiklof (72 out of 211 patents)

Joseph Colannino (60 out of 72 patents)

Igor A Krichtafovitch (40 out of 70 patents)

4. Douglas Wayne Karkow (29 out of 48 patents)

5. David B Goodson (23 out of 31 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Clearsign Combustion Corporation. Retrieved from https://idiyas.com/company/clearsign-combustion

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

Loading…