Patents by Inventor Helmar Rudolf Wagner

Helmar Rudolf Wagner 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).

  • Composition for the dyeing of human hair
    Patent number: 6224637
    Abstract: A hair dyeing composition achieving intensive, stable colorations, which can be varied by the addition of further coupling substances, contains an oxidation dyestuff system reacting with peroxide comprising a combination of a) 2-(2,5-diaminophenyl)ethanol of the water-soluble salts thereof, and b) 2,6-dichloro-4-aminophenol.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: May 1, 2001
    Assignee: Goldwell GmbH
    Inventors: Frank Golinski, Heribert Lorenz, Helmar Rudolf Wagner