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:
Aug. 28, 1979
Filed:
Aug. 24, 1977
Applicant:
Inventors:
Assignee:
Henkel Kommanditgesellschaft auf Aktien, Dusseldorf-Holthausen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
8 101 ; 8 10 ; 8 41 / ; 8 46 ; 8 47 ;
Abstract
Described is a process for dyeing keratin-containing material with developing dyes by applying diazo salts and coupling components successively, in any desired sequence, to the material to be dyed, and coupling them with each other, characterized in that there are used as coupling components specific derivatives of hydroxypyridine or pyridone.