Patents by Inventor J. Mark Hagan

J. Mark Hagan 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).

  • Air filtration system control
    Patent number: 7351274
    Abstract: An intense field dielectric air filtration system associated with an air conditioning unit includes a microprocessor based control system which may be connected to the thermostat of the air conditioning unit to energize the air filtration system in response to a call for heat or cooling signal at the thermostat or startup of the fan motor for the air conditioning unit. The control system includes a power supply for the air filtration system together with voltage and current monitoring circuits for detecting a fault condition. Filtration system on/off and timing function reset switches are connected to the microprocessor and visual displays, including a multicolored LED bargraph display, are controlled by the microprocessor to indicate voltage potential applied to the air filtration system, a fault condition or a test mode.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: April 1, 2008
    Assignee: American Standard International Inc.
    Inventors: Robert W. Helt, Stephen J. Vendt, Roger L. Boydstun, J. Mark Hagan
  • Door for air filter apparatus
    Patent number: D540930
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: April 17, 2007
    Assignee: American Standard International Inc.
    Inventors: Michael Herschel Reedy, Stephen Craig Pennington, Tong Jin Kim, J. Mark Hagan
  • Air inlet grille
    Patent number: D588257
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: March 10, 2009
    Assignee: Trane International Inc.
    Inventors: Michael Herschel Reedy, Stephen Craig Pennington, J. Mark Hagan
  • Air inlet grille
    Patent number: D589605
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: March 31, 2009
    Assignee: Trane International Inc.
    Inventors: Michael Herschel Reedy, Stephen Craig Pennington, J. Mark Hagan