Patents by Inventor Antonius J. J. M. van der Bolt

Antonius J. J. M. van der Bolt 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).

  • Color display tube with vibration damping in a supporting frame connected to a shadow mask
    Patent number: 5315208
    Abstract: In a color display tube a shadow mask skirt is welded to a frame at least near the ends of two oppositely located sides of the frame, and engages the ends of the other two sides of the frame in a fractional manner.
    Type: Grant
    Filed: February 14, 1989
    Date of Patent: May 24, 1994
    Assignee: U.S. Philips Corporation
    Inventors: Antonius J. J. M. van der Bolt, Wilhelmus M. M. van der Steen, Martinus C. M. Verhoeven
  • Colour display tube with shadow mask less sensitive to microphonics
    Patent number: 5103132
    Abstract: A colour picture tube in which a shadow mask is attached to a frame which consists of two short sides and two long sides connected with angular elements. The ends of the short sides of the frame are connected to the angular elements in a way to leave the sides of the frame extending free from the angular elements. The skirt of the shadow mask bears against this free portion. As a result, the shadow mask 10 is less sensitive to vibrations.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: April 7, 1992
    Assignee: U.S. Philips Corporation
    Inventors: Antonius J. J. M. Van Der Bolt, Wilhelmus M. M. Van Der Steen, Jan P. Meijer
  • X-Ray detector
    Patent number: 4418452
    Abstract: A method of manufacturing light detection units which comprise a photocathode disposed on an entrance window, an electron detector including a semiconductor junction, and means which transmit the electrons from the photocathode to the electron detector including a perforated aperture plate disposed between the entrance window and the electron detector. The photocathode is formed on a surface of the entrance window after assembling the entrance window and electron detector to the means which transmit the electrons. Perforations in the aperture plate are covered with spherical shields while the photocathode is formed on the surface of the entrance window. The shields are then removed.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: December 6, 1983
    Assignee: U.S. Philips Corporation
    Inventors: Walter H. Kuhl, Johannes A. J. Van Leunen, Bart van der Eijk, Antonius J. J. M. van der Bolt, Arthur M. E. Hoeberechts