Patents by Inventor Rudolf G. E. Hutter

Rudolf G. E. Hutter 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).

  • Double grid electron gun system and method of use
    Patent number: 3934171
    Abstract: An electron gun for use in a cathode-ray tube is provided with two control grids between the cathode and an accelerating electrode. The control grids are both provided with separate control voltages bearing the same intensity-modulation information for control of the electron beam from the cathode. The two control voltages are caused to vary, one according to a linear function of the variation of the other. When this linear function is caused to have a particular slope, the area of the cathode which emits the electron beam remains approximately constant over a wide range of control voltage.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: January 20, 1976
    Assignee: GTE Laboratories Incorporated
    Inventors: Rudolf G. E. Hutter, Herman O. Dressel