Patents by Inventor Ralph S. Keen, Jr.

Ralph S. Keen, Jr. 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).

  • Infrared generator
    Patent number: 4774396
    Abstract: An apparatus for generating infrared radiation is provided including an electrical heating element that is able to withstand very high, continuous-use temperatures, surrounding or surrounded by a non-conductive material containing dopants of refractory metal oxides, rare earth oxides, or combinations of both. The material may be shaped about the heating element so that the infrared radiation emissions may be focused and/or directed in a desired manner.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: September 27, 1988
    Assignee: FabAid Incorporated
    Inventors: Herbert W. Salit, Ralph S. Keen, Jr., Robert M. Koeller