Membership
Tour
Register
Log in
Gottfried Wenke
Follow
Person
Woodbridge, CT, US
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Couplers for use in oxidative hair dyeing
Patent number
6,855,174
Issue date
Feb 15, 2005
The Procter & Gamble Company
Mu-Ill Lim
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Couplers for use in oxidative hair dyeing
Patent number
6,750,337
Issue date
Jun 15, 2004
The Procter & Gamble Company
Mu-Ill Lim
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Oxidation hair dyeing systems and process for providing more equali...
Patent number
6,379,399
Issue date
Apr 30, 2002
Bristol-Myers Squibb Company
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Synthesis of melanoquaternary compounds and their use as hair dyes...
Patent number
6,313,313
Issue date
Nov 6, 2001
Bristol-Myers Squibb Company
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process for the preparation of substituted indoles
Patent number
6,160,127
Issue date
Dec 12, 2000
Bristol-Myers Squibb Company
Giuseppe Prota
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Oxidative hair dyeing process with dihydroxybenzenes and aminoethan...
Patent number
5,980,586
Issue date
Nov 9, 1999
Bristol-Myers Squibb Company
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Melanoquaternary compounds and their use as hair dyes and for skin...
Patent number
5,961,991
Issue date
Oct 5, 1999
Bristol-Myers Squibb Company
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Synthesis of quarternary melanin compounds and their use as hair dy...
Patent number
5,827,330
Issue date
Oct 27, 1998
Bristol-Myers Squibb Co.
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Dyeing hair with melanin procursors in the presence of iodate and p...
Patent number
5,792,220
Issue date
Aug 11, 1998
Bristol-Myers Squibb Company
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process for the manufacture of a hair dye product containing 5,6-di...
Patent number
5,704,949
Issue date
Jan 6, 1998
Clairol Incorporated
Giuseppe Prota
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Melanoquaternary compounds and their use as hair dyes and for skin...
Patent number
5,702,712
Issue date
Dec 30, 1997
Clairol, Incorporated
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Synthesis of quaternary melanin compounds and their use as hair dye...
Patent number
5,686,084
Issue date
Nov 11, 1997
Clairol Incorporated
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Hair dying methods and kits which contain a dopa species, reactive...
Patent number
5,628,799
Issue date
May 13, 1997
Clairol Incorporated
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Hair dyeing with persulfate oxidants and catechols
Patent number
5,603,734
Issue date
Feb 18, 1997
Clairol Incorporated
Guiseppe Prota
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Oxidative hair dyeing process with dihydroxybenzenes and aminoethan...
Patent number
5,584,889
Issue date
Dec 17, 1996
Clairol Incorporated
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Method of producing DAI from DOPA, using one reaction vessel
Patent number
5,486,619
Issue date
Jan 23, 1996
Clairol, Inc.
Gottfried Wenke
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Erasable hair dyeing process
Patent number
5,474,578
Issue date
Dec 12, 1995
Clairol, Inc.
Alexander C. Chan
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process and kit for post-oxidative treatment of permanently dyed hair
Patent number
5,441,542
Issue date
Aug 15, 1995
Clairol Incorporated
Giuseppe Prota
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Hair dyeing process with aminoalkylthio substituted dihydroxybenzen...
Patent number
5,435,810
Issue date
Jul 25, 1995
Clairol Incorporated
Guiseppe Prota
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Composition and method for dyeing hair with indolic compounds in th...
Patent number
5,413,612
Issue date
May 9, 1995
Clairol Incorporated
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Oxidative hair dyeing method, composition, and kit utilizing hydrox...
Patent number
5,374,288
Issue date
Dec 20, 1994
Clairol Incorporated
Guiseppe Prota
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Use of metal salts and chelates together with chlorites as oxidants...
Patent number
5,368,610
Issue date
Nov 29, 1994
Clairol Incorporated
Alexander Chan
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Oxidative hair dyeing process with catalytic pretreatment
Patent number
5,316,551
Issue date
May 31, 1994
Clairol Incorporated
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process and kit for dyeing hair
Patent number
5,279,617
Issue date
Jan 18, 1994
Clairol Incorporated
Giuseppe Prota
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process and kit for dyeing hair
Patent number
5,279,618
Issue date
Jan 18, 1994
Clairol Incorporated
Giuseppe Prota
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process and kit for dyeing hair
Patent number
5,273,550
Issue date
Dec 28, 1993
Clairol Incorporated
Giuseppe Prota
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Oxidative hair dyeing process with catalytic pretreatment
Patent number
5,100,436
Issue date
Mar 31, 1992
Clairol Incorporated
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Hair dye composition and method
Patent number
5,034,014
Issue date
Jul 23, 1991
Clairol, Inc.
Gottfried Wenke
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Patents Applications
last 30 patents
Information
Patent Application
Novel couplers for use in oxidative hair dyeing
Publication number
20040204583
Publication date
Oct 14, 2004
Mu-Ill Lim
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
Novel couplers for use in oxidative hair dyeing
Publication number
20020144361
Publication date
Oct 10, 2002
Mu-lll Lim
C07 - ORGANIC CHEMISTRY