Patents by Inventor Dieter Werhahn

Dieter Werhahn 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).

  • Water-in-oil polymer dispersions with improved environmental compatibility
    Patent number: 6861469
    Abstract: The invention relates to water-in-oil polymer dispersions consisting of a continuous organic phase and water-soluble polymers finely distributed therein, wherein said polymers have a radical monomer content of less than 1,000 ppm. The invention also relates to a method for producing the inventive polymer dispersions and to their use of flocculation auxiliary agents, thickening agents and as additives for phytosanitary and anti-erosion agents.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: March 1, 2005
    Assignee: Stockhausen GmbH & Co. KG
    Inventors: Bernd Diener, Veronika Gehler, Erich Küster, Daniel Roulands, Dieter Werhahn
  • Water-in-oil polymer dispersions with improved environmental compatibility
    Publication number: 20030176547
    Abstract: The invention relates to water-in-oil polymer dispersions consisting of a continuous organic phase and water-soluble polymers finely distributed therein, wherein said polymers have a radical monomer content of less than 1,000 ppm. The invention also relates to a method for producing the inventive polymer dispersions and to their use of flocculation auxiliary agents, thickening agents and as additives for phytosanitary and anti-erosion agents.
    Type: Application
    Filed: February 24, 2003
    Publication date: September 18, 2003
    Inventors: Bernd Diener, Veronika Gehler, Erich Kuster, Daniel Roulands, Dieter Werhahn