Patents by Inventor Gay L. Marks

Gay L. Marks 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).

  • LCD with self regulating PTC thermistor heating element
    Patent number: 5119215
    Abstract: Positive temperature coefficient thermistors are mounted in heat transfer relationship to a support member of a material that is pervious to light. The thermistors are positioned on the support member to provide a large unobstructed area through which light may pass. The self-limiting nature of the thermistors eliminates the need for a separate temperature responsive heater control switch. The heater is useable for heating liquid crystal displays, and allows back lighting of such displays by a light source positioned on the opposite side of the heater from the display.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: June 2, 1992
    Assignee: Thermo-O-Disc, Incorporated
    Inventors: Gay L. Marks, Indra J. Loomba, John Saling, II
  • Heater
    Patent number: 5059767
    Abstract: Positive temperature coefficienct thermistors are mounted in heat transfer relationship to a support member of a material that is pervious to light. The thermistors are positioned on the support member to provide a large unobstructed area through which light may pass. The self-limiting nature of the thermistors eliminates the need for a separate temperature responsive heater control switch. The heater is useable for heating liquid crystal displays, and allows back lighting of such displays by a light source positioned on the opposite side of the heater from the display.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: October 22, 1991
    Assignee: Therm-O-Disc, Incorporated
    Inventors: Gay L. Marks, Indra J. Loomba, John Saling, II