Patents by Inventor Hein-Willi Weih

Hein-Willi Weih 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).

  • Pigments used to produce paper
    Publication number: 20030037895
    Abstract: The invention concerns sulfate-containing and aluminum-containing pigments having pseudoboehmitic structural units, their manufacture and use for paper making. In the manufacture of paper, these pigments produce surprisingly good printing results with inkjet color printers and are also simple to manufacture.
    Type: Application
    Filed: August 28, 2002
    Publication date: February 27, 2003
    Inventors: Rudolf Lunkenheimer, Hein-Willi Weih, Hasan Ulubay, Bernd Schutzius