Patents by Inventor Philip L. Licter

Philip L. Licter 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).

  • Method testing electron discharge tubes
    Patent number: 5012194
    Abstract: A method of testing an electron discharge device incorporating a cathode electrode heated by bombardment of electrons emitted by a heater electrode so that selected parameters of such device may be determined without requiring that such device be operational, the method in particular including the steps of causing the cathode electrode to be brought to operating temperature within a short period of time and determining that the current due to electrons bombarding the cathode electrode is within predetermined limits.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: April 30, 1991
    Assignee: Raytheon Company
    Inventors: Philip L. Licter, John K. Waterman