Patents by Inventor Manfred Freundel

Manfred Freundel 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).

  • Display screen for a cathode ray tube of glass having an adjustable spectral transmission curve and a method for producing the same
    Patent number: 5973448
    Abstract: A display screen for a cathode ray tube has an adjustable transmission curve in the visible spectral range of (.lambda.) between 380 to 780 nm. The display screen includes: a glass containing an oxide compound and being recyclable by melting under oxidizing conditions and without changing its characteristics and its color; the display screen having a transmission between 70% and 90% and at least one coating applied to the glass; the coating including the oxide compound; and/or, the coating including a component which forms an oxide compound in a melt of coated display screens which oxide component is likewise contained in the glass; and/or, the coating further including TiQ.sub.2 ; and/or, the coating further including titanium or compounds of titanium from which TiO.sub.
    Type: Grant
    Filed: January 22, 1996
    Date of Patent: October 26, 1999
    Assignee: Schott Glas
    Inventors: Johannes Segner, Martin Heming, Manfred Freundel