Inventor · disambiguated record
Erwin Weinrich
Also filed as: ROSE DAVID · TESMANN HOLGER · WEINRICH ERWIN
8 granted patents·613 citations·filing 1974–1979
89Inventor score
Top patents by PatentIndex Score
8 records- 0197US4003699AOxidation hair dyes based upon tetraaminopyrimidine developersHENKEL & CIE GMBH·Filed 1974·Granted Jan 18, 1977·453 cites·9 claims
- 0292US4138478AAgents for reducing the damage to hair during bleaching and dyeingHENKEL KGAA·Filed 1976·Granted Feb 6, 1979·94 cites·14 claims
- 0366US4171203AHair dye compositions containing 3,5-diamino-2-substituted-alkylbenzenesHENKEL KGAA·Filed 1977·Granted Oct 16, 1979·17 cites·20 claims
- 0460US4226852ATwo-component peroxide hair bleaching compositionsHENKEL KGAA·Filed 1979·Granted Oct 7, 1980·17 cites·3 claims
- 0548US4129413AOxidation hair dyes based upon tetraaminopyrimidine developers and mono- and dialkyl -m- dihydroxy benzene couplersHENKEL KGAA·Filed 1977·Granted Dec 12, 1978·12 cites·16 claims
- 0645US4186186AGuanidine accelerators for peroxide hair bleaching compositionsHENKEL KGAA·Filed 1978·Granted Jan 29, 1980·4 cites·7 claims
- 0743US4213758AOxidation hair dyes based upon tetraaminopyrimidine developers and couplers thereforHENKEL KGAA·Filed 1978·Granted Jul 22, 1980·9 cites·9 claims
- 0839US4043750ADeveloper-coupler hair dyes based on triamino-pyrimidinonesHENKEL & CIE GMBH·Filed 1976·Granted Aug 23, 1977·7 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →