Patents by Inventor Donald L. McHenry

Donald L. McHenry 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).

  • Patent number: 5959587
    Abstract: The present invention provides a connector for a glass antenna system having a coil, a first mounting member electrically secured to a first end of the coil, and a second mounting member electrically secured to a second end of the coil. The second mounting member includes an arrangement to permit electrical connection of the connector to a ground. The connector is provided with an arrangement such that the first and second mounting members may be secured to a glass substrate. In one particular embodiment of the invention, the coil is formed from copper wire and includes a ferrite core which extends through the coil. In addition, the first mounting member includes an arrangement to permit electrical connection of the connector to a radio signal receiving device.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: September 28, 1999
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Donald L. McHenry, Michael L. Bletz
  • Patent number: 4113507
    Abstract: A method is provided for preparing tin oxide film forming solutions wherein a heel of prepared filming solution is maintained in a mixing vessel and ingredients for a fresh solution are added thereto so that the viscosity of the solution is kept sufficiently low to improve mixing rates and with the effect that fuming and volatilization of the solution is substantially reduced during mixing.
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: September 12, 1978
    Assignee: PPG Industries, Inc.
    Inventors: Donald L. McHenry, Charles H. Bechtel
  • Patent number: 3996035
    Abstract: Treating discrete flat glass sheets comprising heating, coating, reheating to tempering temperature and cooling to impart at least a partial temper to the coated flat glass sheets without interrupting the operation and without distorting the flatness of the individual sheets unduly while conveying said glass sheets along a continuous, straight line conveyor of the roller hearth type.
    Type: Grant
    Filed: October 1, 1975
    Date of Patent: December 7, 1976
    Assignee: PPG Industries, Inc.
    Inventor: Donald L. McHenry