Inventor · disambiguated record
Stefan Gerstung
Also filed as: GERSTUNG STEFAN
6 granted patents·2,209 citations·filing 1992–1996
90Inventor score
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6 records- 0198US5534267AComposition for the oxidative dyeing of hair containing 4,5-diaminopyrazole derivatives as well as new 4,5-diaminopyrazole derivatives and process for their synthesisWELLA AG·Filed 1993·Granted Jul 9, 1996·498 cites·11 claims
- 0298US5380340AHair dye containing aminopyrazole derivatives as well as pyrazole derivativesWELLA AG·Filed 1992·Granted Jan 10, 1995·596 cites·13 claims
- 0396US5766576AOxidation hair dye compositions containing 3,4,5-triaminopyrazole derivatives and 3,4,5-triaminopyrazole derivativesWELLA AG·Filed 1996·Granted Jun 16, 1998·566 cites·5 claims
- 0496US5663366AProcess for the synthesis of 4,5-diaminopyrazole derivatives useful for dyeing hairWELLA AKTIENGESELLSCHAT·Filed 1996·Granted Sep 2, 1997·460 cites·2 claims
- 0578US5718731AOxidation hair dye composition based on 4,5-diaminopyrazole and m-phenylenediamine derivativesWELLA AG·Filed 1996·Granted Feb 17, 1998·59 cites·7 claims
- 0665US5430159AN-phenylaminopyrazole derivatives as well as composition and process for the dyeing of hairWELLA AG·Filed 1994·Granted Jul 4, 1995·30 cites·12 claims
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