Inventor · disambiguated record
Winfried Seidel
Also filed as: SEIDEL WINFRIED
6 granted patents·41 citations·filing 1984–1992
80Inventor score
Top patents by PatentIndex Score
6 records- 0152US5230710ASubstituted 2,6-diaminotoluenes, processes for their preparation and coloring agents for keratinic fibers comprising these compoundsSCHWARZKOPF GMBH HANS·Filed 1992·Granted Jul 27, 1993·19 cites·12 claims
- 0242US5091581AProcess for the selective preparation of n-substituted 1,4-diamino-2-nitrobenzenesSCHWARZKOPF GMBH HANS·Filed 1990·Granted Feb 25, 1992·3 cites·6 claims
- 0342US5067967ANitro-p-phenylenediamine derivatives, processes for their preparation and coloring agents containing these for use on keratin fibresSCHWARZKOPF GMBH HANS·Filed 1990·Granted Nov 26, 1991·8 cites·8 claims
- 0438US4575378ASubstituted 4-amino-3-nitrophenols, processes for their preparation and hair-coloring agents containing these compoundsSCHWARZKOPF GMBH HANS·Filed 1984·Granted Mar 11, 1986·8 cites·9 claims
- 0531US5163970ANitro-p-phenylenediamine derivatives, processes for their preparation and coloring agents containing these for use on keratin fibresSCHWARZKOPF GMBH HANS·Filed 1991·Granted Nov 17, 1992·0 cites·10 claims
- 0631US4857070A2,4-Diaminophenyl tetrahydrofurfuryl ethers, processes for their preparation and tinting compositions, which contain them for keratinic fibresSEIDEL WINFRIED·Filed 1988·Granted Aug 15, 1989·3 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →