Inventor · disambiguated record
Hans Neunhoeffer
Also filed as: NEUNHOEFFER HANS
7 granted patents·2 pending applications·2,235 citations·filing 1989–2006
90Inventor score
Top patents by PatentIndex Score
9 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
- 0396US5663366AProcess for the synthesis of 4,5-diaminopyrazole derivatives useful for dyeing hairWELLA AKTIENGESELLSCHAT·Filed 1996·Granted Sep 2, 1997·460 cites·2 claims
- 0496US5061289AOxidation hair dye composition containinng diaminopyrazol derivatives and new diaminopyrazol derivativesWELLA AG·Filed 1989·Granted Oct 29, 1991·646 cites·16 claims
- 0584US7863478B2UV filtersMERCK PATENT GMBH·Filed 2005·Granted Jan 4, 2011·5 cites·25 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
- 0758US2006222607A1Tricyclic quinoxaline and quinoline derivatives as UV filtersPFLUCKER FRANK·Filed 2006·Application pending·0 cites
- 0853US7101537B2Tricyclic quinoxaline and quinoline derivatives as a UV filterMERCK PATENT GMBH·Filed 2002·Granted Sep 5, 2006·0 cites·15 claims
- 0937US2003207886A1Preparation containing quinoxaline derivativesFiled 2001·Application pending·0 cites
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