EP Patent

EP0579204A2 — Dye composition for a keratinous fiber

Assigned to Kao Corp · Expires 1994-01-19 · 32y expired

What this patent protects

A dye composition for a keratinous fiber comprising a developer and a coupler, wherein the coupler is a 2-substituted amino-5-alkylphenol derivative represented by the following formula (1): <CHEM> wherein the all symbols are defined in the disclosure, is disclosed. The dye…

USPTO Abstract

A dye composition for a keratinous fiber comprising a developer and a coupler, wherein the coupler is a 2-substituted amino-5-alkylphenol derivative represented by the following formula (1): <CHEM> wherein the all symbols are defined in the disclosure, is disclosed. The dye composition imparts a color tone of a high chroma and is excellent in coloring power and fastness.

Drugs covered by this patent

Patent Metadata

Patent number
EP0579204A2
Jurisdiction
EP
Classification
—
Expires
1994-01-19
Drug substance claim
No
Drug product claim
No
Assignee
Kao Corp
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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