The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2014
Filed:
Oct. 19, 2011
Applicants:
Thomas Rudolph, Darmstadt, DE;
Michaela Oberle, Rodgau, DE;
Inventors:
Thomas Rudolph, Darmstadt, DE;
Michaela Oberle, Rodgau, DE;
Assignee:
MERCK PATENT GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
A61Q 5/10 (2006.01); C07D 315/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to the use of specific ascorbic acid derivatives for dyeing keratin-containing fibers or as direct dyes for the preparation of a composition for dyeing keratin-containing fibers, and to methods for dyeing keratin-containing fibers, in particular for dyeing human hair.