Patents by Inventor Ernhard Tresper

Ernhard Tresper 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).

  • Rapidly crystallizing polyphenylene sulphide compositions
    Patent number: 5057264
    Abstract: Highly crystalline, rapidly crystallizing thermoplastic compositions containing:a) 70-99.5% by weight of a polyphenyl sulphide having a melt viscosity of at least 5 Pas (measured at 306.degree. C. and at a shear stress of 10.sup.2 Pa) andb) 0.5-30% by weight, relative to a) and b) of an oligomeric ester having at least two repeating ester monomeric units and a maximum molecular weight, expressed as a number average, of 6000.
    Type: Grant
    Filed: August 1, 1989
    Date of Patent: October 15, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Bier, Klaus Reinking, Ludwig Bottenbruch, Ernhard Tresper