David Cohen

Person

Milford, CT, US

People

Patents Grantslast 30 patents

Information Patent Grant
Two-part aqueous composition for coloring hair, which forms a gel o...
- Patent number 5,393,305
- Issue date Feb 28, 1995
- Bristol-Myers Squibb Company
- David Cohen
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process for simultaneously waving and coloring hair
- Patent number 5,161,553
- Issue date Nov 10, 1992
- Clairol Incorporated
- David Cohen
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Neutralizing composition and method for hair waving and straightening
- Patent number 4,770,873
- Issue date Sep 13, 1988
- Clairol, Incorporated
- Leszek J. Wolfram
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hair conditioning composition containing cationic polymer and ampho...
- Patent number 4,663,158
- Issue date May 5, 1987
- Clairol Incorporated
- Leszek J. Wolfram
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hair waving or straightening process and product
- Patent number 4,416,297
- Issue date Nov 22, 1983
- Clairol Incorporated
- Leszek J. Wolfram
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Dyeing keratin fibers with 2-substituted m-toluenediamines
- Patent number 4,196,145
- Issue date Apr 1, 1980
- Clairol Incorporated
- Alexander Halasz
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Dyeing keratin fibers with 2-substituted m-toluenediamines
- Patent number 4,092,102
- Issue date May 30, 1978
- Clairol Incorporated
- Alexander Halasz
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hydroxyalkyl-amino nitrodiphenylamine compounds useful as hair dyes
- Patent number 4,021,486
- Issue date May 3, 1977
- Clairol Incorporated
- Alexander Halasz
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hair dye compositions containing nitrodiphenylamine dyes and method...
- Patent number 3,950,127
- Issue date Apr 13, 1976
- Clairol Incorporated
- Alexander Halasz
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

David Cohen

Person

Patents Grantslast 30 patents

Two-part aqueous composition for coloring hair, which forms a gel o...

Process for simultaneously waving and coloring hair

Neutralizing composition and method for hair waving and straightening

Hair conditioning composition containing cationic polymer and ampho...

Hair waving or straightening process and product

Dyeing keratin fibers with 2-substituted m-toluenediamines

Dyeing keratin fibers with 2-substituted m-toluenediamines

Hydroxyalkyl-amino nitrodiphenylamine compounds useful as hair dyes

Hair dye compositions containing nitrodiphenylamine dyes and method...