Patents by Inventor Claude Wermuth

Claude Wermuth 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).

  • Slurry containing an agglomerated carbonate-containing pigment
    Patent number: 5989332
    Abstract: A slurry containing water, carbonate-containing pigment, and dispersant consisting of 25-70 % by weight of agglomerated carbonate-containing pigment, 0.1-1.0% by weight of a dispersant, the balance being water up to 100%, can be used advantageously in papermaking as well as in the paint and lacquer industry. In a novel process for agglomerating ultra-fine particles in slurries the slurry is subjected to heat treatment until the agglomeration is complete.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: November 23, 1999
    Assignee: Pluess-Staufer AG
    Inventors: Hans-Joachim Weitzel, Claude Wermuth, Dieter Strauch