Patents by Inventor Marcus T. M. Crooymans

Marcus T. M. Crooymans 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 having a curved display window and a color display device
    Patent number: 5276377
    Abstract: A color cathode ray tube of the type having a color selection electrode arranged in front of the display screen, is characterized in that the inner surface of the screen exhibits a deviation from an arc shape along the long X axis such that, in operation, the effect of doming is reduced. Preferably, the deviation decreases as the distance to the long axis increases. In an embodiment, the inner surface also exhibits a deviation from an arc shape along the short y-axis.
    Type: Grant
    Filed: January 15, 1991
    Date of Patent: January 4, 1994
    Assignee: U.S. Philips Corporation
    Inventors: Johannes C. A. Van Nes, Johannes Penninga, Marcus T. M. Crooymans