Patents by Inventor Perluigi Testa

Perluigi Testa 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).

  • Method for the illumination of a color television mask tube screen, and device for implementation thereof
    Patent number: 5023157
    Abstract: The disclosure concerns the manufacture of mask type color television tubes. A diaphragm is used, for which the profile or aperture is modified during the operation for the uniform illumination of the vertical stripes of the screen during the different stages for the deposition of luminophors. The modification of the profile is obtained by the shifting of strips parallel to the vertical stripes.
    Type: Grant
    Filed: March 7, 1989
    Date of Patent: June 11, 1991
    Assignee: Videocolor
    Inventor: Perluigi Testa