Patents by Inventor René Vinzenz Blum

René Vinzenz Blum 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).

  • Aqueous suspensions of mineral materials and their uses
    Patent number: 6057398
    Abstract: An aqueous suspension, comprising:(1) water,(2) at least one mineral substance, and(3) a copolymer which comprises the following monomers in polymerized form:(a) at least one ethylenically unsaturated monomer having at least one carboxyl function,(b) optionally, at least one ethylenically unsaturated monomer having at least one sulphonyl function or phosphoryl function,(c) optionally, at least one ethylenically unsaturated monomer having no carboxyl function,(d) at least one ethylenically unsaturated oxyalkylated monomer terminating with a specified hydrophobic group,where the copolymer has a specific viscosity at most equal to 50. The suspension is useful in, for example, paper manufacturing and in the manufacture of coating colors for paper.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: May 2, 2000
    Assignee: Pluess-Staufer AG
    Inventor: Rene Vinzenz Blum