Patents by Inventor Paul A. Jerram

Paul A. Jerram 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).

  • Magnetron
    Patent number: 5172030
    Abstract: A magnetron includes a cathode assembly which comprises a helically wound wire supported by a ceramic cylindrical member. Emissive material is located between adjacent turns of the conductor and connection is provided to the conductor via a rod and tube. When current is passed through the conductor (2), the emissive material (4) is directly heated.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: December 15, 1992
    Assignee: EEV Limited
    Inventors: Ian D. Pitt, Paul A. Jerram, John W. Kerr
  • Magnetrons with resonator element for stabilizing output radiation frequency
    Patent number: 5017891
    Abstract: The performance of a magnetron may be degraded by its output frequency changing. This degradation may be reduced by fixing a resonator element in the magnetron's output waveguide enabling temperature stabilization to be achieved and also permitting the output spectrum of the radiation to be narrowed.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: May 21, 1991
    Assignee: EEV Limited
    Inventors: Paul A. Jerram, Stephen Bainbridge