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. 10, 2021
Filed:
Sep. 20, 2018
Applicant:
Kao Corporation, Tokyo, JP;
Inventors:
Keiji Monda, Katsusika-ku, JP;
Takeshi Iizaki, Saitama, JP;
Assignee:
KAO CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61Q 5/10 (2006.01); A61K 8/49 (2006.01); A61K 8/34 (2006.01);
U.S. Cl.
CPC ...
A61K 8/49 (2013.01); A61K 8/34 (2013.01); A61K 8/345 (2013.01); A61K 8/494 (2013.01); A61Q 5/10 (2013.01); A61K 2800/4324 (2013.01); A61K 2800/882 (2013.01);
Abstract
A hair dyeing method including the following steps (I) and (II): step (I): mixing a first agent comprising an alkaline agent and an oxidation dye precursor, a second agent comprising an oxidizing agent, and a third agent comprising one or more dyes (A) selected from the group consisting of the following (A-1), (A-2), and (A-3), having a pH at 25° C. of 7.5 or more and 12 or less when diluted to be 10 times by mass with water; and step (II): applying a mixed solution prepared in step (I) on hair.