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:
Mar. 01, 2011
Filed:
Jun. 27, 2008
Masakazu Yamaguchi, Sumida-ku, JP;
Osamu Takiguchi, Sumida-ku, JP;
Masaaki Tsukase, Kanagawa, JP;
Yasuhiro Ishiwata, Kanagawa, JP;
Masakazu Yamaguchi, Sumida-ku, JP;
Osamu Takiguchi, Sumida-ku, JP;
Masaaki Tsukase, Kanagawa, JP;
Yasuhiro Ishiwata, Kanagawa, JP;
Kao Corporation, Tokyo, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
The present invention relates to a hair dye composition containing a dissociative azo dye which has high dyeing power, is capable of imparting a vivid color to the hair firmly, has excellent fastness to light, shampooing, sweat, friction, and heat, and fades less with the passage of time because the dye is stable against an alkali agent or an oxidizing agent and does not decompose during hair dyeing; and a hair dyeing method using the hair dye composition.