Patents by Inventor Ralf Biedendorf

Ralf Biedendorf 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 an image-forming tube in a television or monitor and press apparatus for making same
    Patent number: 6396055
    Abstract: The flat display screen for an image-forming tube consists of a front pane portion (2,2′) and a circumferential flange portion (3,3′). The flange portion has an outer surface with a circumferential solder edge (7,7′) on an end of the circumferential flange portion (3,3′) on an opposite side from the front pane portion (2,2′). The outer surface has a circumferential ring-shaped region (5,5′), designated a KC surface, which extends substantially parallel to a central axis (8,8′), which is perpendicular to a surface of the front pane portion (2,2′) passing through a center point on the front pane portion (2,2′).
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: May 28, 2002
    Assignee: Schott Glas
    Inventor: Ralf Biedendorf