Patents by Inventor Adolf Klenk

Adolf Klenk 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 permanent-waving method and aftertreatment composition
    Patent number: 4834971
    Abstract: A method for the permanent shaping of hair, in which the hair is treated with an aqueous preparation of a keratin-reducing substance before and/or after a mechanical shaping step, rinsed with water and fixed by treatment with an aqueous preparation of an oxidizing agent and rinsed with water, wherein, after the oxidative fixing step, the mechanically shaped hair is aftertreated with an aqueous composition comprising a dissolved aluminium (III) salt and a hydroxydi- or tri-C.sub.4-6 -carboxylic acid; the novel composition itself; and a kit for effecting such method.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: May 30, 1989
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Adolf Klenk, Detlef Hollenberg, Horst Hoeffkes