Patents by Inventor Anke Frank

Anke Frank 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).

  • Coloring agent for keratin fibers
    Patent number: 7125427
    Abstract: The colorants for keratin fibers are based on oxidation dye precursors and/or direct dyes and contain a combination of (a) at least one nonionic, amphiphilic associative thickener, (b) at least one fatty alcohol that is liquid at 25° C. and (c) PEG-150/stearyl alcohol/SMDI copolymer in a suitable cosmetic carrier.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: October 24, 2006
    Assignee: Wella AG
    Inventors: Juergen Schmenger, Wilhelm Abels, Manfred Schmitt, Gabriele Hess, Anke Frank
  • Substituted 2-alkylamino-4-amino-1-alkylbenzene compounds and oxidation hair dye compositions based on said compounds
    Patent number: 5645610
    Abstract: The new coupler compounds of the invention are 4-amino-2 -(2'-hydroxyethyl)-amino-5-methoxytoluene and/or 4-amino-2-(2'-hydroxyethyl)amino-5-chlorotoluene. The invention also includes an oxidation hair dye composition including an effective amount, advantageously from 0.01 to 5 percent by weight, of the above-mentioned new coupler compounds together with one or more known developer compounds and optionally certain direct dyes.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: July 8, 1997
    Inventors: Wolfgang R. Balzer, Anke Frank, Alexa Weinges
  • 5-halogen-2,4-Bis (alkylamino)-1-alkylbenzenes and hair dye compositions containing same
    Patent number: 5542953
    Abstract: The composition for the oxidative dyeing of hair contains at least one coupler of the general formula ##STR1## where R is a straight-chain or branched C.sub.1 - to C.sub.4 -alkyl group, X is chlorine or fluorine, and R.sup.1 is a straight-chain or branched C.sub.1 - to C.sub.4 -alkyl group or a straight-chain or branched C.sub.2 - to C.sub.4 -hydroxyalkyl group. The 5-halogen-2,4-bis(alkylamino)-1-alkylbenzenes of the formula (I) are novel. The couplers of the general formula (I) may be obtained through simple chemical reactions, are easily soluble in water and have an outstanding shelf stability, in particular as a constituent of the hair dye composition described here. The dyeing results which can be achieved with the hair dye composition according to the invention are particularly distinguished by the color intensity of the red hues, in addition to the multitude of shades, and by a good purity of color with respect to blue hues.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: August 6, 1996
    Assignee: Wella AG
    Inventors: Wolfgang R. Balzer, Thomas Clausen, Anke Frank, Alexa Weinges