Patents by Inventor Werner Viereck

Werner Viereck 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 WASHING POLYSACCHARIDE DERIVATIVES
    Publication number: 20100099862
    Abstract: The present invention relates to a novel process for removing and purifying polysaccharide derivatives, preferably cellulose ethers, from a suspension using a continuous filter device with a multitude of working zones with intermediate resuspension of the filtercake.
    Type: Application
    Filed: April 18, 2007
    Publication date: April 22, 2010
    Inventors: Matthias Sprehe, Erik-Andreas Klohr, Martin Kowollik, Werner Viereck