Inventor · disambiguated record
Erwin Fleckenstein
Also filed as: FLECKENSTEIN ERWIN
8 granted patents·89 citations·filing 1974–1978
86Inventor score
Top patents by PatentIndex Score
8 records- 0194US4061642A2,4,6-Trisubstituted-3-pyridine carboxamidesCASSELLA FARBWERKE MAINKUR AG·Filed 1976·Granted Dec 6, 1977·38 cites·3 claims
- 0286US3980659ACertain 6-amino-4-hydrocarbyl-nicotinamidesCASSELLA FARBWERKE MAINKUR AG·Filed 1974·Granted Sep 14, 1976·16 cites·7 claims
- 0377US3946024A2-Hydrocarbyloxy-pyridine compoundsCASSELLA FARBWERKE MAINKUR AG·Filed 1975·Granted Mar 23, 1976·9 cites·2 claims
- 0476US3954782A2,6-Hydrazino-3-pyridine carboxyamidesCASSELLA FARBWERKE MAINKUR AG·Filed 1974·Granted May 4, 1976·9 cites·3 claims
- 0572US3947463ACertain 2-amino-nicotinonitrile derivativesCASSELLA FARBWERKE MAINKUR AG·Filed 1974·Granted Mar 30, 1976·8 cites·14 claims
- 0666US4160764AWater-insoluble monoazo-dyestuffs for synthetic fibrous materialsHOECHST AG·Filed 1978·Granted Jul 10, 1979·6 cites·5 claims
- 0742US3939142APhenylazophenyl dyestuffHOECHST AG·Filed 1974·Granted Feb 17, 1976·2 cites·3 claims
- 0838US4028321ABasic azo amino-phenylene dyestuffsHOECHST AG·Filed 1974·Granted Jun 7, 1977·1 cites·4 claims
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