Patents by Inventor Jan-Henric Riedel

Jan-Henric Riedel 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).

  • Hair cosmetic formulations based on phytosterols and .alpha.-hydroxycarboxylic acids
    Patent number: 6156296
    Abstract: Hair cosmetic active compound combinations of(a) one or more phytosterols and(b) one or more .alpha.-hydroxycarboxylic acids and/or .alpha.-ketocarboxylic acids and/or salicylic acid.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: December 5, 2000
    Assignee: Beiersdorf Aktiengesellschaft
    Inventors: Jan-Henric Riedel, Klaus Korbacher, Roland Hengel, Hartmut Schmidt-Lewerkuhne