Patents by Inventor Norbert Kunstler

Norbert Kunstler 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).

  • Process for the production of inorganic-organic plastics
    Patent number: 4146509
    Abstract: The instant invention is directed to a process for the production of inorganic-organic resins, by reaction of an organic polyisocyanate with aqueous basic solutions having an inorganic solid content of from 20 to 80% by weight in the presence of catalysts and optionally other additives, characterized in that the organic polyisocyanate and the aqueous basic solution are used in a proportion by weight of between 80:20 and 10:90 parts by weight and that organic ammonium compounds are used as catalysts.
    Type: Grant
    Filed: December 23, 1976
    Date of Patent: March 27, 1979
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Markusch, Dieter Dieterich, Norbert Kunstler