Patents by Inventor Dietrich Bethge

Dietrich Bethge 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 of embedding thin wires in laminated glass
    Patent number: 4284452
    Abstract: The invention relates to a method wherein thin wires are three-dimensionally embedded in a uniformly finely undulating manner in the intermediate film of laminated glass by filaments of the same base material as the intermediate film with wire wound around them in stretched helical coil configuration being pressed into the film and made to disappear during the pressing procedure to form the laminate. Manufacture is simplified, economical and efficient. Also, better visibility conditions are obtained. The method is specially suited for the manufacture of heated panes for all kinds of transportation.
    Type: Grant
    Filed: January 31, 1980
    Date of Patent: August 18, 1981
    Assignee: Therglas GmbH fur Flachenheizung
    Inventors: Walther Bethge, Dietrich Bethge
  • Laminated transparent pane
    Patent number: 4209687
    Abstract: A laminated transparent pane, such as a car window, has a plurality of conducting wires embedded in it for heating the pane to prevent condensation. These wires are provided in a central lamination in the pane and are twisted into spiral form.
    Type: Grant
    Filed: January 18, 1978
    Date of Patent: June 24, 1980
    Assignee: Therglas GmbH fur Flachenheizung
    Inventors: Walther Bethge, Dietrich Bethge