Patents by Inventor Stephen L. Hardin

Stephen L. Hardin 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).

  • Three conductor heating element
    Patent number: 6555787
    Abstract: A heating element, including a sensor conductor, two resistive conductors, with one resistive conductor arranged on one side of the sensor conductor and an other resistive conductor arranged on an other side of the sensor conductor such that the sensor conductor and the two resistive conductors are substantially parallel and plastic electrical insulation surrounding the sensor conductor and each resistive conductor.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: April 29, 2003
    Assignee: Dekko Heating Technologies, Inc.
    Inventors: James A. Horn, Stephen L. Hardin, Steven M. Nimtz
  • Filter for installation in an annular groove
    Patent number: 5482622
    Abstract: A fluid filter for a solenoid which includes a flexible filter element and two plastic tips for installation in an annular groove. The plastic tips are arcuate shaped to fit tightly against the outside diameter of the annular groove when the flexible filter element is wrapped around the annular groove during installation and the tips are bonded together to secure the filter to the groove.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: January 9, 1996
    Assignee: General Motors Corporation
    Inventors: Kris R. Stark, Michael C. Lewman, Stephen L. Hardin, William J. Chafin