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:
Dec. 24, 2024
Filed:
Mar. 13, 2019
Kao Corporation, Tokyo, JP;
Yoshiyuki Kibe, Utsunomiya, JP;
Takehiko Tojo, Utsunomiya, JP;
KAO CORPORATION, Tokyo, JP;
Abstract
A hair holder () of the present invention has a tubular body () which has: a first opening () located at one end; and a second opening () located at the other end, and which is configured to allow a lock of hair (H) to be inserted from the first opening () toward the second opening () and to be capable of being rolled up. The tubular body () has a longitudinal direction and a width direction that is orthogonal to the longitudinal direction. The tubular body () has two sheets that form outer surfaces. At least one of the two sheets is formed of a color-changeable sheet that satisfies conditions (1) and (2) below: (1) an L* value in an L*a*b* color coordinate space is 90 or less; and (2) a color difference ΔE*value in the L*a*b* color coordinate space between before and after impregnation with a standard hair treatment agent is 1.0 or greater. The standard hair treatment agent contains ammonium thioglycolate in an amount of 6 mass %, ammonium hydrogencarbonate in an amount of 2 mass %, and disodium edetate in an amount of 0.5 mass %, the balance being water, and the standard hair treatment agent is adjusted to a pH of 8.4 at 20° C. using a 28 mass % aqueous solution of ammonia.