Synthesis of melanoquaternary compounds and their use as hair dyes and for skin treatment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 6, 2001
Issued Date -
N/A
app pub date -
Sep 18, 1998
filing date -
Dec 6, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Water soluble, cationic compounds useful as hair colorants or for the treatment of skin which are esters or amides formed by reaction of 5,6-dihydroxyindole-2-carboxylic acid or its N-substituted derivatives and a quaternary salt containing a reactive amino or hydroxyl group, and polymers from such compounds obtained by oxidative polymerization.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully