Patents by Inventor Henricus W. M. Linssen

Henricus W. M. Linssen 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
    Patent number: 4358703
    Abstract: By making the first grid of an electron gun for a cathode-ray tube to extend in the manner of a funnel in such manner that on the side of the second grid the aperture is elongate and mainly a quadrupole lens action is obtained, it is possible to obtain in the corners and at the edge of the display screen a spot which is surrounded by considerably less haze than the known construction having an elongate aperture in the first grid.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: November 9, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Jan Bijma, Henricus W. M. Linssen