Inventor
PROTA GIUSEPPE
IT16 patents
⚠️ This page may combine multiple inventors who share the name “PROTA GIUSEPPE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CLAIROL INC
10 patentsUS5628799AMay 13, 1997
Hair dying methods and kits which contain a dopa species, reactive direct dye, and a ferricyanide oxidant
CLAIROL INC23 citations92
US5273550ADec 28, 1993
Process and kit for dyeing hair
CLAIROL INC26 citations92
US5704949AJan 6, 1998
Process for the manufacture of a hair dye product containing 5,6-dihydroxyindole
CLAIROL INC30 citations91
US5279618AJan 18, 1994
Process and kit for dyeing hair
CLAIROL INC26 citations91
US5686084ANov 11, 1997
Synthesis of quaternary melanin compounds and their use as hair dyes or for skin treatment
CLAIROL INC16 citations82
US4904274AFeb 27, 1990
Coloring hair with aminoalkyl-or aminohydroxyalkyl-catechols
CLAIROL INC22 citations81
US5702712ADec 30, 1997
Melanoquaternary compounds and their use as hair dyes and for skin treatment
CLAIROL INC12 citations73
US5441542AAug 15, 1995
Process and kit for post-oxidative treatment of permanently dyed hair
CLAIROL INC18 citations73
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
US5279617AJan 18, 1994
Process and kit for dyeing hair
CLAIROL INC9 citations72
BRISTOL MYERS SQUIBB CO
5 patentsUS5961991AOct 5, 1999
Melanoquaternary compounds and their use as hair dyes and for skin treatment
BRISTOL MYERS SQUIBB CO10 citations73
US5827330AOct 27, 1998
Synthesis of quarternary melanin compounds and their use as hair dyes or for skin treatment
BRISTOL MYERS SQUIBB CO8 citations73
US5792220AAug 11, 1998
Dyeing hair with melanin procursors in the presence of iodate and peroxide
BRISTOL MYERS SQUIBB CO11 citations73
US6313313B1Nov 6, 2001
Synthesis of melanoquaternary compounds and their use as hair dyes and for skin treatment
BRISTOL MYERS SQUIBB CO0 citations52
US6160127ADec 12, 2000
Process for the preparation of substituted indoles
BRISTOL MYERS SQUIBB CO0 citations52