Patents by Inventor David J. Patrickson

David J. Patrickson 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).

  • Cathode ray tube processing
    Patent number: 4457731
    Abstract: A method of processing regunned cathode ray tubes by exhausting/baking the tube, aging the cathode, and only then flashing the getter. Finally, the gettered tube is high voltage conditioned before testing.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: July 3, 1984
    Assignee: U.S. Philips Corporation
    Inventors: David J. Patrickson, John D. Webster, Edward Schwartz