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:
Sep. 02, 2025
Filed:
Feb. 24, 2023
Kao Corporation, Tokyo, JP;
KAO CORPORATION, Tokyo, JP;
Abstract
A dyeing composition for keratin fibers having a pH of 6 to 12 comprising a hair dye, 5 wt. % or more of a C-Calcohol, a non-ionic surfactant having an HLB value of 11 or less, a quaternary ammonium surfactant according to Formula (I): wherein Ris a Cto Calkyl or alkylene group, Ris a Cto Calkyl or alkylene group, Rand Rare each independently a Cto Calkyl or alkylene group, and Xis a halide, sulfate, or methosulfate anion, and 0.5 to 10 wt. % of a quaternary ammonium surfactant according to Formula (II): wherein Ris a Cto Calkyl or alkylene group, Ris a Cto Calkyl or alkylene group, Rand Rare each independently a Cto Calkyl or alkylene group, and Yis a halide, sulfate or methosulfate anion.