Patents by Inventor Stefan Hammerstein

Stefan Hammerstein 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 foam regulator emulsion
    Patent number: 6340662
    Abstract: The problem addressed by the invention was to provide a foam regulator system containing silicone and/or paraffin and bis-fatty acid amide which would have a low viscosity, which could be handled at low temperatures and which would have a low percentage content of non-foam-regulating ingredients. This problem was largely solved by an aqueous foam regulator emulsion containing 16% by weight to 70% by weight of active foam regulator based on paraffin wax and/or silicone oil, 2% by weight to 15% by weight of nonionic and/or anionic emulsifier and no more than 80% by weight of water. The foam regulator emulsion is preferably used for the production of partiulate foam regulator granules for use in detergents.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: January 22, 2002
    Assignee: Henkel Kommanditgesellschaft Auf Aktien (KGaA)
    Inventors: Juergen Millhoff, Thomas Gassenmeier, Maria Liphard, Rene-Andres Artiga González, Stefan Hammerstein, Ingrid Kraus