Patents by Inventor Werner Barthel

Werner Barthel 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).

  • Insulating elements for walls and ceilings
    Patent number: 4072788
    Abstract: The invention relates to a method for the production of insulating elements for the walls and ceilings, made from facing layers fitted to a frame. Between the facing layers, a perforated foam-permeable, optionally reinforced, intermediate layer is inserted. One of the two chambers thus formed is subsequently filled with foam. The other chamber is filled with a foam permeated granular material.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: February 7, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Herweg, Werner Barthel