Patents by Inventor Johannes Henricus Nicolaas Gijrath

Johannes Henricus Nicolaas Gijrath 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 color selection electrode mount
    Patent number: 4065693
    Abstract: A cathode ray tube construction and more particularly a supporting structure for the color selection electrode of a color television tube. The color selection electrode is formed with a frame member to the outer periphery of which is secured a mounting strip which engages a stud formed as part of the envelope. The mounting strip is formed with a lug portion which limits movement of the frame and a second portion which extends into the aperture of the frame allowing for easy insertion and removal of the frame.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: December 27, 1977
    Assignee: U.S. Philips Corporation
    Inventor: Johannes Henricus Nicolaas Gijrath
  • Structure for attaching conical shield to shadow mask
    Patent number: 3935496
    Abstract: In a color cathode-ray tube, the color selection electrode is secured to the envelope, without the use of a rigid supporting frame, by resilient clamping members to which also the magnetic screening cone is secured.
    Type: Grant
    Filed: November 7, 1974
    Date of Patent: January 27, 1976
    Assignee: U.S. Philips Corporation
    Inventor: Johannes Henricus Nicolaas Gijrath