Patents by Inventor Heinz-G. Bordt

Heinz-G. Bordt 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 producing cones of picture tubes and device for carrying out this method
    Patent number: 6427490
    Abstract: Funnels of picture tubes are typically produced by pressing a molten gob of glass in a mold using a pressing die and by using a ring resting on the mold and resiliently secured to the die, for molding a flat funnel upper edge. At the same time, through corresponding recesses in the mold, bearing faces, so-called pads for connecting the funnel adjustably to the picture screen, are molded onto the outer collar of the funnel.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: August 6, 2002
    Assignee: Schott Glas
    Inventors: Heinz-G. Bordt, Georg Sparschuh