Inventor
BROWN KEITH C
US10 patents
⚠️ This page may combine multiple inventors who share the name “BROWN KEITH C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CLAIROL INC
8 patentsUS4911731AMar 27, 1990
Process and composition for dyeing hair utilizing an anionic polymeric/cationic polymer complex
CLAIROL INC48 citations91
US4566876AJan 28, 1986
Meta-phenylenediamine coupler compounds and oxidative hair dye compositions and methods using same
CLAIROL INC28 citations88
US4904274AFeb 27, 1990
Coloring hair with aminoalkyl-or aminohydroxyalkyl-catechols
CLAIROL INC22 citations81
US5346509ASep 13, 1994
Process for dyeing hair by the sequential treatment of hair with metal ion-containing composition and with a dye composition containing 5,6-dihydroxyindole-2-carboxylic acid and certain derivatives thereof
CLAIROL INC13 citations73
US5735907AApr 7, 1998
Method of coloring hair with sulfo-containing water dispersible colored polymers
CLAIROL INC6 citations72
US5516916AMay 14, 1996
Process for preparing dye compositions containing 5,6-dihydroxyindole
CLAIROL INC6 citations71
US5492541AFeb 20, 1996
Dye compositions containing 5,6-dihydroxy indoles and a foam generator
CLAIROL INC11 citations71
US4838894AJun 13, 1989
Hair dye coupler and process for making
CLAIROL INC9 citations68
BRISTOL MYERS SQUIBB CO
2 patentsUS5876463AMar 2, 1999
Compositions for coloring keratinous fibers comprising sulfo-containing, water dispersible colored polymers
BRISTOL MYERS SQUIBB CO36 citations91
US5951718ASep 14, 1999
Hair coloring compositions containing a sulfo-containing water dispersible colored polymer and an emulsifier
BRISTOL MYERS SQUIBB CO8 citations72