Patents by Inventor Ernst-Joachim Stark

Ernst-Joachim Stark 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).

  • Reinforced polyvinylidene fluoride molding compositions
    Patent number: 4071495
    Abstract: A reinforced polyvinylidene fluoride-containing molding composition containing a polyvinylidene fluoride polymer and reinforcing glass fibers, the fibers having between 10 and 28 weight percent of basic oxides and up to 6 weight percent boron oxide, the amount of boron oxide being no more than twice as great as the amount of alkali oxides contained in the basic oxides.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: January 31, 1978
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Ernst-Joachim Stark, Peter Vanhaiden, Herbert Klinkenberg