Patents by Inventor Karl-Heinz Krussig

Karl-Heinz Krussig 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).

  • Apparatus for fastening a corrugated sheet to a flat sheet
    Patent number: 3993428
    Abstract: A structure is described which consists of a corrugated and a flat sheet or film of thermoplastic material, which sheets are positively connected by matching depressions with undercuts arranged along the grooves of the corrugated sheet and at corresponding points of the flat sheets. The structure is especially suited to make inserts for trickling-filter towers.
    Type: Grant
    Filed: November 1, 1973
    Date of Patent: November 23, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Peter Gumm, Karl-Heinz Krussig, Jorg Lohmann, Josef Zimmermann