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:
Feb. 18, 1992
Filed:
Apr. 25, 1991
Applicant:
Inventors:
Hidetoshi Tagami, Chiba, JP;
Jiro Kawase, Funabashi, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
8435 ; 8405 ; 8406 ; 8408 ; 8409 ; 8414 ; 8415 ; 8416 ; 424 70 ;
Abstract
A dyeing composition for a keratin fiber which comprises 1,5-dihydroxynaphthalene as a coupling substance, 2-amino-5-hydroxybenzoic acid or a cosmetically acceptable salt thereof as a color developing substance, and a cosmetically acceptable base is disclosed. The dyeing composition for a keratin fiber give a vivid red color tone having a high chroma and an extremely high fastness.