Patents by Inventor Lothar Frenz

Lothar Frenz 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).

  • Fire-retardant glazing
    Patent number: 5205099
    Abstract: A fire-retardant glazing is disclosed wherein, especially in case of a fire, a wedge is displaced on a counter bevel in parallel to the pane by means of an intumescent material and thereby generates an extensively permanent contact pressure on the pane in the pane channel.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: April 27, 1993
    Assignee: Schott Glaswerke
    Inventors: Holger Grunhage, Roland Leroux, Jurgen Thurk, Lothar Frenz