Patents by Inventor Hans-Jurgen Lehmann

Hans-Jurgen Lehmann 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).

  • Patent number: 3936317
    Abstract: A dishwashing and cleansing agent composition for manual dishwashing based upon anionic surface-active surfactants consists essentially of (A) from 20% to 90% by weight of a higher sulfonate or sulfate of the group of the alkyl sulfonates, olefin sulfonates, .alpha.-sulfofatty acid alkyl esters, dialkyl sulfosuccinic esters, alkylbenzene sulfonates and alkyl sulfates, each having 8 to 20 carbon atoms in the hydrophobic moiety, and (B) from 10% to 80% by weight of a mono- or polyglycol ether sulfate of a higher 1,2-alkanediol having 10 to 22 carbon atoms; as well as a dishwashing concentrate containing this composition and a method of using this composition.
    Type: Grant
    Filed: February 21, 1975
    Date of Patent: February 3, 1976
    Assignee: Henkel & Cie G.m.b.H.
    Inventors: Hans-Jurgen Lehmann, Martin Bischoff, Horst Baumann, Peter Krings