Patents by Inventor Siegfried Senn

Siegfried Senn 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).

  • Variation of binder content in the core layer
    Patent number: 3988183
    Abstract: Particleboard, i.e., wood chip panels having greater transverse strength in that the core layer is characterized by having a central zone therein with a greater amount of binder on the chips in said central zone, based on the total weight of the wood chips in the respective zones, than on the chips in the intermediate zones adjacent the face zones of said core layer.
    Type: Grant
    Filed: November 10, 1970
    Date of Patent: October 26, 1976
    Assignee: Fahrni Institute Ltd.
    Inventor: Siegfried Senn