Patents by Inventor Christa Schramm

Christa Schramm 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 of keratin-containing fibers with preparations which contain alkyl glycosides and oxidation dye precursors
    Patent number: 5716418
    Abstract: A composition and process for coloring keratin-containing fibers wherein the composition comprises: (a) an alkyl glycoside of the formula (I):R.sup.1 --O--(G).sub.x --H (I)wherein R.sup.1 is a linear or branched alkyl or alkenyl radical having from 12 to 16 carbon atoms, (G) is an anhydroglucose unit, and x is a number from about 1 to about 2.5; (b) an oxidation dye precursor; and (c) a water-based carrier.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: February 10, 1998
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Iduna Matzik, Horst Hoeffkes, Detlef Hollenberg, Reinhard Mueller, Manuela Ehlert, Christa Schramm