Patents by Inventor Schroer

Schroer 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).

  • Coating compositions based on a mixture of aqueous polyurethane dispersions
    Patent number: 4206255
    Abstract: This invention relates to coating compositions based on aqueous polyurethane dispersions and to the use of these coating compositions for the production of top coats or finishes on PVC. The coating compositions according to the invention contain a mixture of two aqueous polyurethane dispersions which have particular chemico-physical properties.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: June 3, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Wenzel, Schroer, Manfred Preuss, Hans-Joachim Koch