Patents by Inventor C.V. Varanasi

C.V. Varanasi 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).

  • Barrier coatings and methods in discharge lamps
    Publication number: 20040140753
    Abstract: The present invention includes barrier coatings and methods for reducing or preventing chemical reaction between the discharge medium and arc tube wall material in discharge lamps. The barrier coatings comprise nitride layer exposed to the discharge medium formed from one or more of aluminum, boron, scandium, yttrium, or the lanthanides. In another aspect, the present invention includes methods of forming coatings on the inner wall of arc tubes by introducing two or more precursors into the arc tube chamber and pyrolitically reacting the precursors to form layers for the coating.
    Type: Application
    Filed: November 10, 2003
    Publication date: July 22, 2004
    Inventors: Tryggvi Emilsson, Timothy R. Brumleve, C.V. Varanasi