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:
Jan. 02, 2007
Filed:
Feb. 20, 2003
David Rozzell, Burbank, CA (US);
Juergen Allwohn, Burgschwalbach, DE;
Laurent Chassot, Praroman, CH;
Cècile Pasquier, Marly, CH;
Guido Sauter, Thoerishaus, CH;
Vèronique Buclin-charrière, Morlon, CH;
David Rozzell, Burbank, CA (US);
Juergen Allwohn, Burgschwalbach, DE;
Laurent Chassot, Praroman, CH;
Cècile Pasquier, Marly, CH;
Guido Sauter, Thoerishaus, CH;
Vèronique Buclin-Charrière, Morlon, CH;
Wella AG, Darmstadt, DE;
Abstract
Pro-dyes of direct dyes having an enzymatically-labile functionality, e.g. glutaramide derivatives of direct dyes of formula (I) or their physiologically acceptable salts, are described, as well as compositions for dyeing keratinous fibers containing these pro-dyes, as well as compositions for dyeing keratinous fibers containing a combination of at least one pro-dye and at least one enzyme capable of cleaving the glutaramide functionality in the pro-dye. A method for dyeing keratinous fibers with the aforementioned dyeing compositions is also described.