Inventor · disambiguated record
Gottfried Wenke
Also filed as: WENKE GOTTFRIED
28 granted patents·443 citations·filing 1990–2004
97Inventor score
Top patents by PatentIndex Score
28 records- 0179US6379399B1Oxidation hair dyeing systems and process for providing more equalized coloration on new and old growth hairBRISTOL MYERS SQUIBB CO·Filed 2000·Granted Apr 30, 2002·9 cites·32 claims
- 0277US5100436AOxidative hair dyeing process with catalytic pretreatmentCLAIROL INC·Filed 1991·Granted Mar 31, 1992·45 cites·12 claims
- 0376US5474578AErasable hair dyeing processCLAIROL INC·Filed 1994·Granted Dec 12, 1995·58 cites·11 claims
- 0471US6855174B2Couplers for use in oxidative hair dyeingPROCTER & GAMBLE·Filed 2004·Granted Feb 15, 2005·1 cites·14 claims
- 0568US5704949AProcess for the manufacture of a hair dye product containing 5,6-dihydroxyindoleCLAIROL INC·Filed 1996·Granted Jan 6, 1998·30 cites·11 claims
- 0668US5316551AOxidative hair dyeing process with catalytic pretreatmentCLAIROL INC·Filed 1992·Granted May 31, 1994·28 cites·2 claims
- 0766US5034014AHair dye composition and methodCLAIROL INC·Filed 1990·Granted Jul 23, 1991·33 cites·8 claims
- 0864US5273550AProcess and kit for dyeing hairCLAIROL INC·Filed 1991·Granted Dec 28, 1993·26 cites·43 claims
- 0963US5368610AUse of metal salts and chelates together with chlorites as oxidants in hair coloringCLAIROL INC·Filed 1993·Granted Nov 29, 1994·29 cites·25 claims
- 1061US5279618AProcess and kit for dyeing hairCLAIROL INC·Filed 1992·Granted Jan 18, 1994·26 cites·30 claims
- 1160US5628799AHair dying methods and kits which contain a dopa species, reactive direct dye, and a ferricyanide oxidantCLAIROL INC·Filed 1995·Granted May 13, 1997·23 cites·25 claims
- 1259US5686084ASynthesis of quaternary melanin compounds and their use as hair dyes or for skin treatmentCLAIROL INC·Filed 1995·Granted Nov 11, 1997·16 cites·19 claims
- 1354US5441542AProcess and kit for post-oxidative treatment of permanently dyed hairCLAIROL INC·Filed 1993·Granted Aug 15, 1995·18 cites·12 claims
- 1453US5702712AMelanoquaternary compounds and their use as hair dyes and for skin treatmentCLAIROL INC·Filed 1995·Granted Dec 30, 1997·12 cites·16 claims
- 1550US5961991AMelanoquaternary compounds and their use as hair dyes and for skin treatmentBRISTOL MYERS SQUIBB CO·Filed 1997·Granted Oct 5, 1999·10 cites·30 claims
- 1650US5603734AHair dyeing with persulfate oxidants and catecholsCLAIROL INC·Filed 1995·Granted Feb 18, 1997·14 cites·22 claims
- 1749US5486619AMethod of producing DAI from DOPA, using one reaction vesselCLAIROL INC·Filed 1994·Granted Jan 23, 1996·3 cites·20 claims
- 1847US6750337B2Couplers for use in oxidative hair dyeingPROCTER & GAMBLE·Filed 2002·Granted Jun 15, 2004·0 cites·10 claims
- 1947US5827330ASynthesis of quarternary melanin compounds and their use as hair dyes or for skin treatmentBRISTOL MYERS SQUIBB CO·Filed 1997·Granted Oct 27, 1998·8 cites·12 claims
- 2047US5792220ADyeing hair with melanin procursors in the presence of iodate and peroxideBRISTOL MYERS SQUIBB CO·Filed 1997·Granted Aug 11, 1998·11 cites·16 claims
- 2145US5980586AOxidative hair dyeing process with dihydroxybenzenes and aminoethanethiolsBRISTOL MYERS SQUIBB CO·Filed 1996·Granted Nov 9, 1999·8 cites·21 claims
- 2245US5413612AComposition and method for dyeing hair with indolic compounds in the presence of a chlorite oxidantCLAIROL INC·Filed 1993·Granted May 9, 1995·10 cites·13 claims
- 2344US5279617AProcess and kit for dyeing hairCLAIROL INC·Filed 1992·Granted Jan 18, 1994·9 cites·42 claims
- 2442US5374288AOxidative hair dyeing method, composition, and kit utilizing hydroxyl substituted benzothiazinesCLAIROL INC·Filed 1993·Granted Dec 20, 1994·9 cites·12 claims
- 2536US5584889AOxidative hair dyeing process with dihydroxybenzenes and aminoethanethiolsCLAIROL INC·Filed 1994·Granted Dec 17, 1996·5 cites·38 claims
- 2633US6160127AProcess for the preparation of substituted indolesBRISTOL MYERS SQUIBB CO·Filed 1998·Granted Dec 12, 2000·0 cites·19 claims
- 2731US5435810AHair dyeing process with aminoalkylthio substituted dihydroxybenzene and oxidative agentsCLAIROL INC·Filed 1993·Granted Jul 25, 1995·2 cites·13 claims
- 2830US6313313B1Synthesis of melanoquaternary compounds and their use as hair dyes and for skin treatmentBRISTOL MYERS SQUIBB CO·Filed 1998·Granted Nov 6, 2001·0 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →