Patents by Inventor Keith Graff

Keith Graff 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).

  • Apparatus for determining a temperature of a substrate and methods therefor
    Publication number: 20070064767
    Abstract: An apparatus for measuring a temperature of a substrate is disclosed. The apparatus includes a phosphor material in thermal contact to the substrate, the phosphor material producing a fluorescent response in a first wavelength range when exposed to a electromagnetic radiation in a second wavelength range, the fluorescent response decaying at a decay rate that is related to a temperature of the phosphor material, and the phosphor material producing a first set of non volatile byproducts when exposed to a plasma.
    Type: Application
    Filed: September 22, 2005
    Publication date: March 22, 2007
    Inventor: Keith Graff