Patents by Inventor Martin H. G. Steeghs

Martin H. G. Steeghs 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 for displaying colored pictures
    Patent number: 4128790
    Abstract: Disclosed is a cathode ray tube of the postfocusing type for displaying color pictures having an apertured color selection means with an electrostatic postfocusing lens formed in each of the apertures. The electrodes of the color selection means at the higher potential are connected to a high voltage connection of the tube and the electrodes at the lower potential are charged by the electron beams with their voltage being stabilized by a series arrangement of zener diodes connected to the high voltage connection of the tube.
    Type: Grant
    Filed: December 2, 1976
    Date of Patent: December 5, 1978
    Assignee: U.S. Philips Corporation
    Inventor: Martin H. G. Steeghs