Douglas W. KARKOW

Person

Kent, WA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Burner and burner system with flange mount
- Patent number 11,953,199
- Issue date Apr 9, 2024
- ClearSign Technologies Coporation
- James K. Dansie
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Control system and method for a burner with a distal flame holder
- Patent number 11,953,201
- Issue date Apr 9, 2024
- ClearSign Technologies Corporation
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Methods of upgrading a conventional combustion system to include a...
- Patent number 11,473,774
- Issue date Oct 18, 2022
- CLEARSIGN TECHNOLOGIES CORPORATION
- Douglas Wayne Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Ultra low emissions firetube boiler burner
- Patent number 11,460,188
- Issue date Oct 4, 2022
- ClearSign Technologies Corporation
- Donald Kendrick
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Burner system with discrete transverse flame stabilizers
- Patent number 11,435,143
- Issue date Sep 6, 2022
- ClearSign Technologies Corporation
- Donald Kendrick
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Plug and play burner
- Patent number 11,313,553
- Issue date Apr 26, 2022
- ClearSign Technologies Corporation
- James K. Dansie
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Method for a perforated flame holder with adjustable fuel nozzle
- Patent number 11,248,786
- Issue date Feb 15, 2022
- CLEARSIGN TECHNOLOGIES CORPORATION
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Field installed perforated flame holder and method of assembly and...
- Patent number 11,221,137
- Issue date Jan 11, 2022
- Clearsign Combustion Corporation
- Jonathan Bucher
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Fuel combustion system with a perforated reaction holder
- Patent number 11,156,356
- Issue date Oct 26, 2021
- CLEARSIGN TECHNOLOGIES CORPORATION
- Douglas W. Karkow
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Porous flame holder for low NOx combustion
- Patent number 11,047,572
- Issue date Jun 29, 2021
- CLEARSIGN TECHNOLOGIES CORPORATION
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Burner system including a non-planar perforated flame holder
- Patent number 10,823,401
- Issue date Nov 3, 2020
- CLEARSIGN TECHNOLOGIES CORPORATION
- Joseph Colannino
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Pre-mixed fuel burner with perforated flame holder
- Patent number 10,808,927
- Issue date Oct 20, 2020
- CLEARSIGN TECHNOLOGIES CORPORATION
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Method for electrically controlled combustion fluid flow
- Patent number 10,808,925
- Issue date Oct 20, 2020
- CLEARSIGN TECHNOLOGIES CORPORATION
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Prefabricated integrated combustion assemblies and methods of insta...
- Patent number 10,801,723
- Issue date Oct 13, 2020
- CLEARSIGN TECHNOLOGIES CORPORATION
- Douglas Wayne Karkow
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Burner including a perforated flame holder spaced away from a fuel...
- Patent number 10,760,784
- Issue date Sep 1, 2020
- CLEARSIGN TECHNOLOGIES CORPORATION
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Perforated flame holder with adjustable fuel nozzle
- Patent number 10,578,301
- Issue date Mar 3, 2020
- CLEARSIGN TECHNOLOGIES CORPORATION
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Selectable dilution low NOx burner
- Patent number 10,571,124
- Issue date Feb 25, 2020
- Clearsign Combustion Corporation
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Multi-nozzle combustion assemblies including perforated flame holde...
- Patent number 10,551,058
- Issue date Feb 4, 2020
- CLEARSIGN TECHNOLOGIES CORPORATION
- Jerry Michael Lang
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Duplex burner with velocity-compensated mesh and thickness
- Patent number 10,539,326
- Issue date Jan 21, 2020
- Clearsign Combustion Corporation
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Perforated flame holder and system including protection from abrasi...
- Patent number 10,514,165
- Issue date Dec 24, 2019
- Clearsign Combustion Corporation
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Horizontally fired burner with a perforated flame holder
- Patent number 10,458,649
- Issue date Oct 29, 2019
- Clearsign Combustion Corporation
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Method for operating a combustion system including a perforated fla...
- Patent number 10,386,062
- Issue date Aug 20, 2019
- Clearsign Combustion Corporation
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Method for low NOx fire tube boiler
- Patent number 10,359,213
- Issue date Jul 23, 2019
- Clearsign Combustion Corporation
- Douglas W. Karkow
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Fuel combustion system with a perforated reaction holder
- Patent number 10,337,729
- Issue date Jul 2, 2019
- Clearsign Combustion Corporation
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Combustion system with flame location actuation
- Patent number 10,240,788
- Issue date Mar 26, 2019
- Clearsign Combustion Corporation
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Electrically controlled combustion fluid flow
- Patent number 10,190,767
- Issue date Jan 29, 2019
- Clearsign Combustion Corporation
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Flame visualization control for a burner including a perforated fla...
- Patent number 10,156,356
- Issue date Dec 18, 2018
- Clearsign Combustion Corporation
- Joseph Colannino
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Fluid heater with perforated flame holder, and method of operation
- Patent number 10,139,131
- Issue date Nov 27, 2018
- Clearsign Combustion Corporation
- Douglas W. Karkow
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Combustion system and method for electrically assisted start-up
- Patent number 10,125,979
- Issue date Nov 13, 2018
- Clearsign Combustion Corporation
- Joseph Colannino
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
High output porous tile burner
- Patent number 10,125,983
- Issue date Nov 13, 2018
- Clearsign Combustion Corporation
- Joseph Colannino
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES

Patents Applicationslast 30 patents

Information Patent Application
ULTRA LOW EMISSIONS FIRETUBE BOILER BURNER
- Publication number 20230115032
- Publication date Apr 13, 2023
- CLEARSIGN TECHNOLOGIES CORPORATION
- DONALD KENDRICK
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
BURNER SYSTEM WITH DISCRETE TRANSVERSE FLAME STABILIZERS
- Publication number 20230072921
- Publication date Mar 9, 2023
- CLEARSIGN TECHNOLOGIES CORPORATION
- VENKATESH IYER
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
BURNER AND BURNER SYSTEM WITH FLANGE MOUNT
- Publication number 20220299203
- Publication date Sep 22, 2022
- CLEARSIGN TECHNOLOGIES CORPORATION
- James K. DANSIE
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
PERFORATED FLAME HOLDER SUPPORT MEMBER FOR STRUCTURAL INTEGRITY
- Publication number 20210310650
- Publication date Oct 7, 2021
- CLEARSIGN COMBUSTION CORPORATION
- DOUGLAS W. KARKOW
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
LOW EMISSION MODULAR FLARE STACK
- Publication number 20210239317
- Publication date Aug 5, 2021
- CLEARSIGN TECHNOLOGIES CORPORATION
- COLIN JAMES DELLER
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
BURNER SYSTEM INCLUDING A DISTAL FLAME HOLDER AND A NON-REACTIVE FL...
- Publication number 20210190310
- Publication date Jun 24, 2021
- CLEARSIGN TECHNOLOGIES CORPORATION
- Colin James Deller
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
CONTROL SYSTEM AND METHOD FOR A BURNER WITH A DISTAL FLAME HOLDER
- Publication number 20210164652
- Publication date Jun 3, 2021
- CLEARSIGN TECHNOLOGIES CORPORATION
- DOUGLAS W. KARKOW
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
BURNER SYSTEM INCLUDING A PLURALITY OF PERFORATED FLAME HOLDERS
- Publication number 20210063086
- Publication date Mar 4, 2021
- CLEARSIGN TECHNOLOGIES CORPORATION
- DOUGLAS W. KARKOW
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Application
ULTRA LOW EMISSIONS FIRETUBE BOILER BURNER
- Publication number 20200340664
- Publication date Oct 29, 2020
- CLEARSIGN TECHNOLOGIES CORPORATION
- DONALD KENDRICK
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
BURNER SYSTEM INCLUDING A DISTAL FLAME HOLDER AND A NON-REACTIVE FL...
- Publication number 20200240628
- Publication date Jul 30, 2020
- CLEARSIGN TECHNOLOGIES CORPORATION
- Colin James Deller
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
CONTROL SYSTEM AND METHOD FOR A BURNER WITH A DISTAL FLAME HOLDER
- Publication number 20200224873
- Publication date Jul 16, 2020
- CLEARSIGN TECHNOLOGIES CORPORATION
- DOUGLAS W. KARKOW
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
METHOD FOR A PERFORATED FLAME HOLDER WITH ADJUSTABLE FUEL NOZZLE
- Publication number 20200132296
- Publication date Apr 30, 2020
- CLEARSIGN TECHNOLOGIES CORPORATION
- DOUGLAS W. KARKOW
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
FIELD INSTALLED PERFORATED FLAME HOLDER AND METHOD OF ASSEMBLY AND...
- Publication number 20200056782
- Publication date Feb 20, 2020
- CLEARSIGN COMBUSTION CORPORATION
- JONATHAN BUCHER
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
FURNACE INCLUDING PERFORATED AND BLUFF BODY FLAME HOLDER FOR ENHANC...
- Publication number 20200003413
- Publication date Jan 2, 2020
- CLEARSIGN COMBUSTION CORPORATION
- JAMES K. DANSIE
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
METHOD FOR OPERATING A COMBUSTION SYSTEM INCLUDING A PERFORATED FLA...
- Publication number 20190390854
- Publication date Dec 26, 2019
- CLEARSIGN COMBUSTION CORPORATION
- DOUGLAS W. KARKOW
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
ULTRA LOW EMISSIONS FIRETUBE BOILER BURNER
- Publication number 20190368723
- Publication date Dec 5, 2019
- CLEARSIGN COMBUSTION CORPORATION
- DONALD KENDRICK
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
FUEL COMBUSTION SYSTEM WITH A PERFORATED REACTION HOLDER
- Publication number 20190277492
- Publication date Sep 12, 2019
- CLEARSIGN COMBUSTION CORPORATION
- DOUGLAS W. KARKOW
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Application
PERFORATED FLAME HOLDER SUPPORT MEMBER FOR STRUCTURAL INTEGRITY
- Publication number 20190257516
- Publication date Aug 22, 2019
- CLEARSIGN COMBUSTION CORPORATION
- DOUGLAS W. KARKOW
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
PERFORATED FLAME HOLDER SUPPORT STRUCTURE WITH HEATING ELEMENT
- Publication number 20190137096
- Publication date May 9, 2019
- CLEARSIGN COMBUSTION CORPORATION
- DONALD KENDRICK
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
METHOD FOR ELECTRICALLY CONTROLLED COMBUSTION FLUID FLOW
- Publication number 20190113224
- Publication date Apr 18, 2019
- CLEARSIGN COMBUSTION CORPORATION
- DOUGLAS W. KARKOW
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
BURNER SYSTEM WITH DISCRETE TRANSVERSE FLAME STABILIZERS
- Publication number 20190107331
- Publication date Apr 11, 2019
- CLEARSIGN COMBUSTION CORPORATION
- DONALD KENDRICK
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
FLAME VISUALIZATION CONTROL FOR A BURNER INCLUDING A PERFORATED FLA...
- Publication number 20190093886
- Publication date Mar 28, 2019
- CLEARSIGN COMBUSTION CORPORATION
- JOSEPH COLANNINO
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
HIGH OUTPUT POROUS TILE BURNER
- Publication number 20190049107
- Publication date Feb 14, 2019
- CLEARSIGN COMBUSTION CORPORATION
- JOSEPH COLANNINO
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
BURNER SYSTEM INCLUDING A NON-PLANAR PERFORATED FLAME HOLDER
- Publication number 20190024887
- Publication date Jan 24, 2019
- CLEARSIGN COMBUSTION CORPORATION
- JOSEPH COLANNINO
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
PERFORATED FLAME HOLDER WITH GAPS BETWEEN TILE GROUPS
- Publication number 20190011123
- Publication date Jan 10, 2019
- CLEARSIGN COMBUSTION CORPORATION
- JAMES K. DANSIE
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
RADIANT WALL BURNER INCLUDING PERFORATED FLAME HOLDERS
- Publication number 20190011124
- Publication date Jan 10, 2019
- CLEARSIGN COMBUSTION CORPORATION
- JOSEPH COLANNINO
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
STARTUP METHOD AND MECHANISM FOR A BURNER HAVING A PERFORATED FLAME...
- Publication number 20190003705
- Publication date Jan 3, 2019
- CLEARSIGN COMBUSTION CORPORATION
- DOUGLAS W. KARKOW
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Application
COMBUSTION SYSTEM WITH FLAME LOCATION ACTUATION
- Publication number 20180372314
- Publication date Dec 27, 2018
- CLEARSIGN COMBUSTION CORPORATION
- DOUGLAS W. KARKOW
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
PARTIALLY TRANSITIONED FLAME START-UP OF A PERFORATED FLAME HOLDER
- Publication number 20180202653
- Publication date Jul 19, 2018
- CLEARSIGN COMBUSTION CORPORATION
- Douglas W. Karkow
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Application
FLUID HEATER WITH PERFORATED FLAME HOLDER, AND METHOD OF OPERATION
- Publication number 20180135884
- Publication date May 17, 2018
- CLEARSIGN COMBUSTION CORPORATION
- DOUGLAS W. KARKOW
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES

Douglas W. KARKOW

Person

Patents Grantslast 30 patents

Burner and burner system with flange mount

Control system and method for a burner with a distal flame holder

Methods of upgrading a conventional combustion system to include a...

Ultra low emissions firetube boiler burner

Burner system with discrete transverse flame stabilizers

Plug and play burner

Method for a perforated flame holder with adjustable fuel nozzle

Field installed perforated flame holder and method of assembly and...

Fuel combustion system with a perforated reaction holder

Porous flame holder for low NOx combustion

Burner system including a non-planar perforated flame holder

Pre-mixed fuel burner with perforated flame holder

Method for electrically controlled combustion fluid flow

Prefabricated integrated combustion assemblies and methods of insta...

Burner including a perforated flame holder spaced away from a fuel...

Perforated flame holder with adjustable fuel nozzle

Selectable dilution low NOx burner

Multi-nozzle combustion assemblies including perforated flame holde...

Duplex burner with velocity-compensated mesh and thickness

Perforated flame holder and system including protection from abrasi...

Horizontally fired burner with a perforated flame holder

Method for operating a combustion system including a perforated fla...

Method for low NOx fire tube boiler

Fuel combustion system with a perforated reaction holder

Combustion system with flame location actuation

Electrically controlled combustion fluid flow

Flame visualization control for a burner including a perforated fla...

Fluid heater with perforated flame holder, and method of operation

Combustion system and method for electrically assisted start-up

High output porous tile burner

Patents Applicationslast 30 patents

ULTRA LOW EMISSIONS FIRETUBE BOILER BURNER

BURNER SYSTEM WITH DISCRETE TRANSVERSE FLAME STABILIZERS

BURNER AND BURNER SYSTEM WITH FLANGE MOUNT

PERFORATED FLAME HOLDER SUPPORT MEMBER FOR STRUCTURAL INTEGRITY

LOW EMISSION MODULAR FLARE STACK

BURNER SYSTEM INCLUDING A DISTAL FLAME HOLDER AND A NON-REACTIVE FL...

CONTROL SYSTEM AND METHOD FOR A BURNER WITH A DISTAL FLAME HOLDER

BURNER SYSTEM INCLUDING A PLURALITY OF PERFORATED FLAME HOLDERS

ULTRA LOW EMISSIONS FIRETUBE BOILER BURNER

BURNER SYSTEM INCLUDING A DISTAL FLAME HOLDER AND A NON-REACTIVE FL...

CONTROL SYSTEM AND METHOD FOR A BURNER WITH A DISTAL FLAME HOLDER

METHOD FOR A PERFORATED FLAME HOLDER WITH ADJUSTABLE FUEL NOZZLE

FIELD INSTALLED PERFORATED FLAME HOLDER AND METHOD OF ASSEMBLY AND...

FURNACE INCLUDING PERFORATED AND BLUFF BODY FLAME HOLDER FOR ENHANC...

METHOD FOR OPERATING A COMBUSTION SYSTEM INCLUDING A PERFORATED FLA...

ULTRA LOW EMISSIONS FIRETUBE BOILER BURNER

FUEL COMBUSTION SYSTEM WITH A PERFORATED REACTION HOLDER

PERFORATED FLAME HOLDER SUPPORT MEMBER FOR STRUCTURAL INTEGRITY

PERFORATED FLAME HOLDER SUPPORT STRUCTURE WITH HEATING ELEMENT

METHOD FOR ELECTRICALLY CONTROLLED COMBUSTION FLUID FLOW

BURNER SYSTEM WITH DISCRETE TRANSVERSE FLAME STABILIZERS

FLAME VISUALIZATION CONTROL FOR A BURNER INCLUDING A PERFORATED FLA...

HIGH OUTPUT POROUS TILE BURNER

BURNER SYSTEM INCLUDING A NON-PLANAR PERFORATED FLAME HOLDER

PERFORATED FLAME HOLDER WITH GAPS BETWEEN TILE GROUPS

RADIANT WALL BURNER INCLUDING PERFORATED FLAME HOLDERS

STARTUP METHOD AND MECHANISM FOR A BURNER HAVING A PERFORATED FLAME...

COMBUSTION SYSTEM WITH FLAME LOCATION ACTUATION

PARTIALLY TRANSITIONED FLAME START-UP OF A PERFORATED FLAME HOLDER

FLUID HEATER WITH PERFORATED FLAME HOLDER, AND METHOD OF OPERATION