Patents by Inventor Henry W. Kuzminski

Henry W. Kuzminski 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 picture tube having improved slit type shadow mask and method of making same
    Patent number: 4429028
    Abstract: The photographic method utilized for fabricating slit-type shadow masks is improved by utilizing specially-shaped elements in a pattern on one of the photographic masters. In particular, the photographic master includes trapezoidal-shaped elements at locations away from the vicinity of the pattern minor axis, with the larger bases of the trapezoids facing away from the pattern minor axis.
    Type: Grant
    Filed: June 22, 1982
    Date of Patent: January 31, 1984
    Assignee: RCA Corporation
    Inventor: Henry W. Kuzminski
  • Color picture tube having improved slit type shadow mask and method of making same
    Patent number: 4296189
    Abstract: A color picture tube having a slit type apertured mask, wherein the slit apertures are arranged in columns and the apertures in each column are separated by webs is improved by increasing the radius of curvature of the ends of the apertures at the webs to substantially greater than half the width of the central portions of the respective apertures. Such aperture shape may be achieved by a method wherein the aperture images of a photomaster used in fabricating the mask have greater width at the ends thereof than at the centers of the aperture images.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: October 20, 1981
    Assignee: RCA Corporation
    Inventor: Henry W. Kuzminski