Patents by Inventor Andrew Turnbull

Andrew Turnbull 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).

  • Bolometric detector
    Patent number: 4425504
    Abstract: A bolometric detector comprising an optical immersion lens and a pyroelectric detector element mounted so as to be spaced from the lens. The detector may be mounted spaced from the lens by an air gap, by a foraminous spacer, or by a cement having a low thermal conductivity.
    Type: Grant
    Filed: July 8, 1981
    Date of Patent: January 10, 1984
    Assignee: U.S. Philips Corporation
    Inventors: Andrew A. Turnbull, Raymond F. Hall, Colin D. Overall
  • Photoconductive structures
    Patent number: 4286034
    Abstract: A photoconductive structure comprises an electrically insulating substrate bearing an evaporated metal electrode pattern, and a 60 to 150 nm thick polyimide film disposed between a sintered cadmium selenide layer and the substrate with the superposed electrode pattern. In the absence of the polyimide film, there had been unacceptable attack of the electrode structure and of silica substrates by the cadmium selenide.
    Type: Grant
    Filed: October 11, 1979
    Date of Patent: August 25, 1981
    Assignee: U.S. Philips Corporation
    Inventor: Andrew A. Turnbull
  • Method of bonding crystal layers to insulating substrates
    Patent number: 4247352
    Abstract: A surface of an insulating substrate, if not wettable, is made wettable, then moistened with water and brought in intimate contact with a water soluble crystal layer, whereby a strong bond between the crystal and the substrate will result.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: January 27, 1981
    Assignee: North American Philips Corporation
    Inventors: Edward H. Stupp, Andrew A. Turnbull