Patents by Inventor Hans P. Mattle

Hans P. Mattle 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).

  • Measuring head for determining the color purity and the convergence in a color picture tube
    Patent number: 4551748
    Abstract: A measuring head serving to determine both the color purity and the convergence in color TV picture tubes with a specially shaped diaphragm aperture, with the distance of the brightness sensors being adapted to the mutual spacing of the phosphor stripes, permits a wide positioning tolerance when placed in front of the screen of the picture tube. Moreover, to make the determination of the convergence more accurate, the output signal of the measuring head is such that it can be made independent of the influence of the intensity and of the time dependence of the brightness signals.
    Type: Grant
    Filed: February 16, 1983
    Date of Patent: November 5, 1985
    Assignee: International Standard Electric Corporation
    Inventor: Hans P. Mattle