Patents by Inventor Paul V Dennis

Paul V Dennis 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).

  • Coatings
    Patent number: 6007908
    Abstract: A scratch resistant coating for the window of an infra red sensor comprises a layer of zirconium oxynitride or hafnium oxynitride. The formula of the coating is M.sub.1-(y+z) O.sub.y N.sub.z where y and z are both in the range 0.1 to 0.4. The coating and the window are both transmissive in the infra red and visible ranges of the spectrum.
    Type: Grant
    Filed: February 11, 1997
    Date of Patent: December 28, 1999
    Assignee: GEC. Marconi Limited
    Inventors: David M Reece, Paul V Dennis