Patents by Inventor Hans-Peter Schwengers

Hans-Peter Schwengers 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).

  • Paper coating composition
    Patent number: 5244964
    Abstract: A paper coating composition consisting essentially of an aqueous plastic dispersion which is based on .alpha.-methyleneglutaronitrile, a C.sub.8 - to C.sub.12 - monovinylaromatic compound, a plasticizing component selected from the group consisting of C.sub.4 - to C.sub.6 acyclic, conjugated diolefines and C.sub.4 - to C.sub.8 - alkyl (meth)acrylates, and a C.sub.3 - to C.sub.6 .alpha., .beta.-monoethylenically unsaturated carboxylic acid as binder, and conventional auxiliaries.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: September 14, 1993
    Assignee: Huels Aktiengesellschaft
    Inventors: Karl Hahn, Hans-Peter Schwengers, Edgar Brehmer, Willi Gruber