Membership
Tour
Register
Log in
Lana Hochman
Follow
Person
Westport, CT, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Hair dye coupler compounds
Patent number
5,183,941
Issue date
Feb 2, 1993
Clairol Incorporated
Yuh-Guo Pan
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Dye couplers
Patent number
5,073,173
Issue date
Dec 17, 1991
Clairol Incorporated
Yuh-Guo Pan
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Nitroaniline dyes with a cyano substituent group
Patent number
5,024,673
Issue date
Jun 18, 1991
Clairol Incorporated
Yuh-Guo Pan
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Organic synthesis
Patent number
4,980,505
Issue date
Dec 25, 1990
Clairol Incorporated
Yuh-Guo Pan
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Nitroaniline dyes with a cyano substituent group
Patent number
4,980,158
Issue date
Dec 25, 1990
Clairol Incorporated
Yuh-Guo Pan
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE