Patents by Inventor G{umlaut over (u)}nther Lang

G{umlaut over (u)}nther Lang 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 shaping method using acidic aqueous intermediate rinse to prevent overcurling
    Patent number: 6173717
    Abstract: Methods of permanent shaping and volumizing hair that are gentle and prevent overcurling are described. In one method using curlers to curl the hair, an alkaline permanent shaping composition having a pH of 7.6 to 11 and including a hair keratin-reducing substance is applied to the hair and allowed to act on the hair for 5 to 30 minutes at room temperature or for 2 to 20 minutes at an elevated temperature. Then the hair is optionally rinsed with water and subsequently with an acidic aqueous intermediate rinse, which has a pH of 2 to 6.5 and includes an aliphatic organic acid. Next the hair is wound onto curlers, after which the hair is allowed to rest for 30 minutes at room temperature or 20 minutes at an elevated temperature. After the resting period the hair is treated with an oxidant-based fixative, which can be a solution of hydrogen peroxide, and the curlers are removed. The hair is subsequently rinsed with water or washed with a shampoo to remove the fixative and combed into a hair style.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: January 16, 2001
    Assignee: Wella Aktiengesellschaft
    Inventors: Dieter Schonert, Beate Dannecker, G{umlaut over (u)}nther Lang, Dieter Hoch, Wilfried K. Kalbacher, Johann Markl