Patents by Inventor Karl-Heinz Krummel

Karl-Heinz Krummel 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).

  • Polyvinyl chloride-free plastisol and its use
    Patent number: 5155154
    Abstract: A polyvinyl chloride-free plastisol comprisesa) 5 to 50% by weight of a methyl methacrylate-homopolymer or coplymerb) 10 to 50% by weight of a plasticiser,c) 20 to 70% by weight of a fillerd) 2 to 30% by weight of a blocked poly isocyanate, ande) 0.2 to 5% by weight of a polyamine. The plastisol is particularly useful for sealing spot welded joints in, for example, motor vehicle manufacture.
    Type: Grant
    Filed: December 22, 1988
    Date of Patent: October 13, 1992
    Assignee: Dr. Alois Stankiewicz GmbH
    Inventors: Karl-Heinz Krummel, Ernst Lohmar, Thomas Stankiewicz