Patents by Inventor Detlef Hollenberg

Detlef Hollenberg 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: 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
  • Patent number: 4823458
    Abstract: This invention relates to a novel continuous process for producing a hair curler comprising an elongated foam-plastic body with a substantially axially extending wire insert which is shorter than the length of the elongated foam-plastic body.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: April 25, 1989
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Detlef Hollenberg, Hans Schneider, Georg Weihrauch
  • Patent number: 4685931
    Abstract: An aqueous dispersion of a copolymer offrom about 50 to 60% by weight ethyl acrylatefrom about 30 to 40% by weight methacrylic acidfrom about 5 to 15% by weight acrylic acid andfrom about 0.02 to 0.04% by weight of a polyethylenically copolymerizable monomer, for example ethylene glycol dimethacrylate. The dispersion is suitable as an additive for aqueous, mildly acidic preparations of hydrogen peroxide to impart an increased viscosity to them after neutralization. The hydrogen peroxide preparations in question are particularly suitable for use as a developer composition for oxidative hair dyes and hair bleaches.
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: August 11, 1987
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Ludwig Schieferstein, Detlef Hollenberg, Norbert Maak
  • Patent number: 4666712
    Abstract: Hair-cosmetic compositions for improving the structure, resilience and strength of hair comprising a content of onic acids derived from aldohexoses or disaccharides containing a free aldehyde function and/or their .gamma.- or .delta.-lactones and a method of improving the structure and strength of hair, particularly hair which has been adversely affected by cosmetic treatments such as dyeing, bleaching, permanent waving, etc.
    Type: Grant
    Filed: January 8, 1986
    Date of Patent: May 19, 1987
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Detlef Hollenberg, Hans-Wolfgang Cortekar, Karl Giede, Horst Hoffkes