Hair dye

US9655820B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9655820-B2
Application numberUS-201514965274-A
CountryUS
Kind codeB2
Filing dateDec 10, 2015
Priority dateDec 15, 2014
Publication dateMay 23, 2017
Grant dateMay 23, 2017

How to read this patent

A practical reading order for non-experts. Skip the full description unless you need deep technical detail.

  1. Title

    What the patent document calls the invention.

  2. Abstract

    A short plain-language summary of the technical disclosure.

  3. Assignees and inventors

    Who owns or filed the patent and who is credited as inventor.

  4. Key dates

    Filing, priority, publication, and grant dates set the timeline.

  5. First independent claim

    The legal scope of protection — read this for what is actually claimed.

  6. CPC / IPC classifications

    Technology tags used to group this patent with similar filings.

  7. Citations and related patents

    Prior art links and similar publications in this corpus.

Abstract

Official abstract text for this publication.

A hair dye comprising at least 0.3 to 2% by mass of at least one of acid dyes, 0.5 to 6% by mass of a film-forming resin, 15 to 55% by mass of alcohol having 7 or less carbon atoms and 20% by mass or more of water and having a pH modified to 2 to 5, wherein the hair dye contains particles having an average particle diameter of 0.3 to 3 μm is provided as a hair dye which does not require washing of the hairs immediately after used and which is excellent not only in a hair dyeing property immediately after applied but also such a cumulative hair dyeing property as gradually dyeing the hairs at every frequency of repeating use thereof.

First claim

Opening claim text (preview).

The invention claimed is: 1. A hair dye comprising at least: 0.3 to 2% by mass of at least one of acid dyes; 0.5 to 6% by mass of a film-forming resin; 15 to 55% by mass of alcohol having 7 or less carbon atoms; and 20% by mass or more of water; and having a pH modified to 2 to 5, wherein the hair dye contains particles having an average particle diameter of 0.3 to 3 μm and being subjected to surface treatment of 2 to 15% by mass with silica. 2. The hair dye as described in claim 1 , wherein the particles having an average particle diameter of 0.3 to 3 μm comprise at least one selected from the group consisting of black iron oxide, red iron oxide, yellow iron oxide, carbon black, sumi, silica and titanium oxide. 3. The hair dye as described in claim 1 , comprising a thickener as a settling inhibitor for the particles. 4. The hair dye as described in claim 2 , comprising a thickener as a settling inhibitor for the particles.

Assignees

Inventors

Classifications

  • A61Q5/065Primary

    Preparations for temporary colouring the hair, e.g. direct dyes · CPC title

  • Homopolymers or copolymers of amides or imides, e.g. (meth) acrylamide; Compositions of derivatives of such polymers · CPC title

  • A61K8/044Primary

    Suspensions · CPC title

  • containing inorganic ingredients · CPC title

  • Surface treated · CPC title

Patent family

Related publications grouped by family.

External sources

Frequently asked questions

Answers are generated from the same data shown on this page.

What does patent US9655820B2 cover?
A hair dye comprising at least 0.3 to 2% by mass of at least one of acid dyes, 0.5 to 6% by mass of a film-forming resin, 15 to 55% by mass of alcohol having 7 or less carbon atoms and 20% by mass or more of water and having a pH modified to 2 to 5, wherein the hair dye contains particles having an average particle diameter of 0.3 to 3 μm is provided as a hair dye which does not require washing…
Who is the assignee on this patent?
Mitsubishi Pencil Co
What technology area does this patent fall under?
Primary CPC classification A61Q5/065. Mapped technology areas include Human Necessities.
When was this patent published?
Publication date Tue May 23 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).