Patents by Inventor Thomas S. Hartwick

Thomas S. Hartwick has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for electrodynamically driving a charged gas or charged particles entrained in a gas
    Patent number: 10088151
    Abstract: Gaseous particles or gas-entrained particles may be conveyed by electric fields acting on charged species included in the gaseous or gas-entrained particles.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: October 2, 2018
    Assignee: CLEARSIGN COMBUSTION CORPORATION
    Inventors: David B. Goodson, Thomas S. Hartwick, Joseph Colannino, Christopher A. Wiklof
  • System and method for flattening a flame
    Patent number: 9958154
    Abstract: A charge electrode configured to impart a time-varying charge to a flame and a shape electrode located outside the flame may be driven synchronously by a voltage source through time varying voltage(s). The flame may be flattened or compressed responsive to an electric field produced by the shape electrode acting on the charges imparted to the flame.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: May 1, 2018
    Assignee: CLEARSIGN COMBUSTION CORPORATION
    Inventors: Joseph Colannino, Thomas S. Hartwick, David B. Goodson, Tracy A. Prevo, Christopher A. Wiklof
  • METHOD FOR ELECTRODYNAMICALLY DRIVING A CHARGED GAS OR CHARGED PARTICLES ENTRAINED IN A GAS
    Publication number: 20160161109
    Abstract: Gaseous particles or gas-entrained particles may be conveyed by electric fields acting on charged species included in the gaseous or gas-entrained particles.
    Type: Application
    Filed: December 11, 2015
    Publication date: June 9, 2016
    Inventors: DAVID B. GOODSON, THOMAS S. HARTWICK, JOSEPH COLANNINO, CHRISTOPHER A. WIKLOF
  • METHOD AND APPARATUS FOR ELECTRICAL CONTROL OF HEAT TRANSFER
    Publication number: 20160040946
    Abstract: A heat exchange system includes an electrode configured to electrostatically control a flow of a heated gas stream in the vicinity of a heat transfer surface and/or a heat-sensitive surface.
    Type: Application
    Filed: August 25, 2015
    Publication date: February 11, 2016
    Inventors: DAVID B. GOODSON, THOMAS S. HARTWICK, CHRISTOPHER A. WIKLOF
  • Apparatus for electrodynamically driving a charged gas or charged particles entrained in a gas
    Patent number: 9243800
    Abstract: Gaseous particles or gas-entrained particles may be conveyed by electric fields acting on charged species included in the gaseous or gas-entrained particles.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: January 26, 2016
    Assignee: CLEARSIGN COMBUSTION CORPORATION
    Inventors: David B. Goodson, Thomas S. Hartwick, Tracy A. Prevo, Joseph Colannino, Christopher A. Wiklof
  • Method and apparatus for electrical control of heat transfer
    Patent number: 9151549
    Abstract: A heat exchange system includes an electrode configured to electrostatically control a flow of a heated gas stream in the vicinity of a heat transfer surface and/or a heat-sensitive surface.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: October 6, 2015
    Assignee: ClearSign Combustion Corporation
    Inventors: David Goodson, Thomas S. Hartwick, Christopher A. Wiklof
  • ELECTRIC FIELD CONTROL OF TWO OR MORE RESPONSES IN A COMBUSTION SYSTEM
    Publication number: 20150024331
    Abstract: A combustion system may include a plurality of heated volume portions. At least two of the plurality of heated volume portions may include corresponding respective electrodes. The electrodes may be driven to produce respective electric fields in their respective volumes. The electric fields may be configured to drive desired respective responses.
    Type: Application
    Filed: October 6, 2014
    Publication date: January 22, 2015
    Applicant: CLEARSIGN COMBUSTION CORPORATION
    Inventors: THOMAS S. HARTWICK, DAVID B. GOODSON, JOSEPH COLANNINO, CHRISTOPHER A. WIKLOF
  • Electric field control of two or more responses in a combustion system
    Patent number: 8881535
    Abstract: A combustion system may include a plurality of heated volume portions. At least two of the plurality of heated volume portions may include corresponding respective electrodes. The electrodes may be driven to produce respective electric fields in their respective volumes. The electric fields may be configured to drive desired respective responses.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: November 11, 2014
    Assignee: Clearsign Combustion Corporation
    Inventors: Thomas S. Hartwick, David B. Goodson, Christopher A. Wiklof, Joseph Colannino
  • System and apparatus for applying an electric field to a combustion volume
    Patent number: 8851882
    Abstract: According to an embodiment, combustion in a combustion volume is affected by at least two sequentially applied non-parallel electric fields. According to an embodiment, a combustion volume is equipped with at least three individually modulatable electrodes. According to an embodiment, an electric field application apparatus for a combustion volume includes a safety apparatus to reduce or eliminate danger.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: October 7, 2014
    Assignee: Clearsign Combustion Corporation
    Inventors: Thomas S. Hartwick, David Goodson, Richard F. Rutkowski, Geoff Osler, Christopher A Wiklof
  • SYSTEM AND METHOD FOR FLATTENING A FLAME
    Publication number: 20130071794
    Abstract: A charge electrode configured to impart a time-varying majority charge on a flame and a shape electrode located outside the flame may be driven synchronously by a voltage source through time varying voltage(s). The flame may be flattened or compressed responsive to an electric field produced by the shape electrode acting on the charges imparted on the flame.
    Type: Application
    Filed: October 23, 2012
    Publication date: March 21, 2013
    Applicant: CLEARSIGN COMBUSTION CORPORATION
    Inventors: JOSEPH COLANNINO, THOMAS S. HARTWICK, DAVID B. GOODSON, TRACY A. PREVO, CHRISTOPHER A. WIKLOF
  • METHOD AND APPARATUS FOR ELECTRODYNAMICALLY DRIVING A CHARGED GAS OR CHARGED PARTICLES ENTRAINED IN A GAS
    Publication number: 20130004902
    Abstract: Gaseous particles or gas-entrained particles may be conveyed by electric fields acting on charged species included in the gaseous or gas-entrained particles.
    Type: Application
    Filed: February 9, 2012
    Publication date: January 3, 2013
    Applicant: CLEARSIGN COMBUSTION CORPORATION
    Inventors: David B. Goodson, Thomas S. Hartwick, Tracy A. Prevo, Joseph Colannino, Christopher A. Wiklof
  • ELECTRIC FIELD CONTROL OF TWO OR MORE RESPONSES IN A COMBUSTION SYSTEM
    Publication number: 20120317985
    Abstract: A combustion system may include a plurality of heated volume portions. At least two of the plurality of heated volume portions may include corresponding respective electrodes. The electrodes may be driven to produce respective electric fields in their respective volumes. The electric fields may be configured to drive desired respective responses.
    Type: Application
    Filed: February 9, 2012
    Publication date: December 20, 2012
    Applicant: CLEARSIGN COMBUSTION CORPORATION
    Inventors: THOMAS S. HARTWICK, DAVID B. GOODSON, CHRISTOPHER A. WIKLOF, JOSEPH COLANNINO
  • METHOD AND APPARATUS FOR ELECTRICAL CONTROL OF HEAT TRANSFER
    Publication number: 20110203771
    Abstract: A heat exchange system includes an electrode configured to electrostatically control a flow of a heated gas stream in the vicinity of a heat transfer surface and/or a heat-sensitive surface.
    Type: Application
    Filed: January 13, 2011
    Publication date: August 25, 2011
    Applicant: CLEARSIGN COMBUSTION CORPORATION
    Inventors: DAVID GOODSON, THOMAS S. HARTWICK, CHRISTOPHER A. WIKLOF
  • SYSTEM AND APPARATUS FOR APPLYING AN ELECTRIC FIELD TO A COMBUSTION VOLUME
    Publication number: 20110027734
    Abstract: According to an embodiment, combustion in a combustion volume is affected by at least two sequentially applied non-parallel electric fields. According to an embodiment, a combustion volume is equipped with at least three individually modulatable electrodes. According to an embodiment, an electric field application apparatus for a combustion volume includes a safety apparatus to reduce or eliminate danger.
    Type: Application
    Filed: April 1, 2010
    Publication date: February 3, 2011
    Applicant: CLEARSIGN COMBUSTION CORPORATION
    Inventors: Thomas S. Hartwick, David Goodson, Richard F. Rutkowski, Geoff Osler, Christopher A. Wiklof