Patents by Inventor Hans-Rudolf Lehnert

Hans-Rudolf Lehnert 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).

  • Matting agent
    Patent number: 8926748
    Abstract: A matting agent useful for the preparation of matted coatings comprising, inorganic oxide particulates; and wax coated on the inorganic oxide particulates, wherein the wax possesses a crystallinity of about 50% or more and said wax is present in an amount ranging from 15 wt % to 30 wt % based on a total weight of said matting agent.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: January 6, 2015
    Assignee: Grace GmbH & Co. KG
    Inventors: Hans-Rudolf Lehnert, Markus Kretzschmar
  • MATTING AGENT
    Publication number: 20100071593
    Abstract: A matting agent useful for the preparation of matted coatings comprising, inorganic oxide particulates and wax coated on the inorganic oxide particulates, wherein the wax possesses a crystallinity of about 50% or more.
    Type: Application
    Filed: December 5, 2007
    Publication date: March 25, 2010
    Inventors: Hans-Rudolf Lehnert, Markus Kretzschmar