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:
Oct. 05, 1999
Filed:
Jul. 10, 1997
Applicant:
Inventor:
James S Anderson, Bethel, CT (US);
Assignee:
Bristol-Myers Squibb Company, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C09B / ;
U.S. Cl.
CPC ...
8405 ; 8428 ; 8643 ; 552255 ;
Abstract
An anthraquinone mixture comprising three 1,4-hydroxyalkylamino-anthraquinone derivatives, wherein two of the anthraquinone compounds in the mixture are symmetric and the other anthraquinone compound is asymmetric, and wherein each of the anthraquinone compounds has similar polarities. The anthraquinone mixtures are used in compositions and methods for the direct dyeing of keratinous fibers, particularly human hair on the head.