Patents by Inventor Rolf Leberfinger

Rolf Leberfinger 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).

  • Process for the fat-liquoring of leathers and skins
    Patent number: 4470825
    Abstract: Self-emulsifying lecithin salts are used for the fat-liquoring of leathers and skins. They are obtained by the partial or complete neutralization of industrial lecithins obtained from vegetable oils (acid numbers 10 to 40) with ethoxylated fatty amines.
    Type: Grant
    Filed: October 14, 1983
    Date of Patent: September 11, 1984
    Assignee: Schill & Seilacher GmbH & Co.
    Inventors: Fritz Landbeck, Heinz-Peter Matschkal, Paul Rathfelder, Rolf Leberfinger