Patents by Inventor Robert William Hepburn

Robert William Hepburn 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).

  • Publication number: 20130105735
    Abstract: A process is disclosed for the production of persistent phosphors, comprising exposing particles of phosphor precursors for a short time to a heat source selected from a particle plasma and an open flame arising from the combustion of hydrocarbons. A process for coating a substrate with persistent phosphors is also disclosed, comprising directing a stream of phosphor precursor particles for a short time through the same types of heat source toward the substrate. Preferred phosphors are Strontium Aluminate-based doped with Dysprosium and Europium.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 2, 2013
    Inventors: Willard Scott Rader, Robert William Hepburn