Patents by Inventor Guenter Kreienfeld

Guenter Kreienfeld 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-containing detergent mixtures comprising oligoglycoside surfactants
    Patent number: 5578560
    Abstract: An aqueous detergent composition containing: (a) from 12 to 15% by weight of a nonionic surfactant selected from the group consisting of alkyl oligoglycosides, alkenyl oligoglycosides, and mixtures thereof; (b) from 20 to 30% by weight of an alkyl sulfate; (c) from 40 to 60% by weight of an alkyl ether sulfate, and (d) from 12 to 15% by weight of a component selected from the group consisting of amphoteric surfactants, zwitterionic surfactants, and mixtures thereof, all weights being based on the solids content of the composition.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: November 26, 1996
    Assignee: Henkel Corporation
    Inventors: Brigitte Giesen, Guenter Kreienfeld, Andreas Syldath, Karl-Heinz Schmid
  • Process for the production of light-colored washing-active .alpha.-sulfofatty acid lower alkyl ester salts
    Patent number: 5391786
    Abstract: Light-colored ester sulfonates can be obtained by sulfonation of fatty acid lower alkyl esters and subsequent working up providing fatty acid esters having a low content of oxo compounds and unsaturated compounds are used in the sulfonation stage.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: February 21, 1995
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Bernd Fabry, Ulrich Kratzel, Wolfgang Schmidt, Guenter Kreienfeld