Patents by Inventor Kark-Heinz Bahr

Kark-Heinz Bahr 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).

  • Starch treatment process
    Patent number: 5275774
    Abstract: In a process for extruding or injection moulding starch-containing composition, a substantially transparent product is produced by providing that the starch used contains less than 8% by weight of water, that the water content of the starch in the barrel of the extruder or injection moulding machine is controlled so as to be within the range of from 5 to 20% by weight (based on the weight of the starch) and that water is removed from the composition immediately before the composition leaves the barrel of the extruder or the injection moulding machine so that the water content of the composition passing through the die and/or entering the mould is less than 3% by weight of the starch.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: January 4, 1994
    Assignee: Cerestar Holdings, B.V.
    Inventors: Kark-Heinz Bahr, Michael G. Fitton, Helmut Koch