Inventor · Leichlingen, DE

Christoph Erdelen

313Patents
38h-index
185Co-inventors
93Inventor score

Filing activity: Aug 15, 1990 → Oct 19, 2016

Most-cited inventions

PatentTitleAreaCited byStatus
US5258527A Insecticidal, acaricidal and herbicidal 1-H-3-aryl-pyrrolidine-2,4-dione derivatives Chemistry; Metallurgy 104 Expired
US5462913A Substituted 1-H-3-aryl-pyrrolidine-2,4-dione derivatives Chemistry; Metallurgy 102 Expired
US5622917A Substituted 1H--3-aryl-pyrrolidine-2,4-dione derivatives Chemistry; Metallurgy 97 Expired
US6458965B1 Aryl phenyl substituted cyclic ketoenols Chemistry; Metallurgy 94 Expired
US6114374A 2-and 2,5-substituted phenylketoenols Chemistry; Metallurgy 93 Expired
US5504057A Dialkyl-1-H-3-(2,4-dimethylphenyl)-pyrrolidine-2,4-diones, their preparation and their use Chemistry; Metallurgy 89 Expired
US5994274A Dialkyl phenyl halide-substituted keto-enols for use as herbicides and pesticides Chemistry; Metallurgy 89 Expired
US6451843B1 Arylphenyl-substituted cyclic keto enols Chemistry; Metallurgy 88 Expired
US6417370B1 Arylphenyl-substituted cyclic keto-enols Chemistry; Metallurgy 85 Expired
US5830826A Alkoxy-alkyl-substituted 1H-3-aryl-pyrrolidine-2, 4-diones used as herbicicides and pesticides Chemistry; Metallurgy 84 Expired
US6140358A Substituted phenyl keto enols as pesticides and herbicides Chemistry; Metallurgy 82 Expired
US6316486A Alkyl dihalogenated phenyl-substituted ketoenols useful as pesticides and herbicides Chemistry; Metallurgy 81 Expired
US6358887B1 2-Phenyl-substituted heterocyclic 1,3-ketonols as herbicides and pesticides Chemistry; Metallurgy 80 Expired
US5589469A Substituted 1H-3-aryl-pyrrolidine-2,4-dione derivatives Chemistry; Metallurgy 73 Expired
US5610122A 3-aryl-4-hydroxy-delta3-dihydrofuranone derivatives Chemistry; Metallurgy 68 Expired
US6110872A 2,4,5-trisubstituted phenylketo-enols for use as pesticides and herbicides Chemistry; Metallurgy 67 Expired
US6200932A Phenyl-substituted cyclic ketoenol Chemistry; Metallurgy 66 Expired
US5677449A Substituted 1-H-3-aryl-pyrrolidine-2,4-dione derivatives Chemistry; Metallurgy 66 Expired
US5116836A 3-phenyl-pyrrolidine-2,4-dione derivatives having pesticidal activity Chemistry; Metallurgy 64 Expired
US6133296A Substituted pyridyl keto enols Chemistry; Metallurgy 61 Expired
US6472419B1 1-H-3-aryl-pyrrolidine-2, 4-dione derivatives as pest-control agents Chemistry; Metallurgy 61 Expired
US6251830A Dialkyl-halogenophenyl-substituted ketoenols Chemistry; Metallurgy 60 Expired
US5683965A Substituted aryl keto-enolic heterocycles Chemistry; Metallurgy 58 Expired
US5225434A Pesticidal and herbicidal polycyclic 3-aryl-pyrrolidine-2,4-dione derivatives Chemistry; Metallurgy 55 Expired
US6288102A Substituted phenylketoenols and their use as pesticides and herbicides Chemistry; Metallurgy 55 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.