Inventor · Leverkusen, DE

Hermann Hagemann

91Patents
25h-index
99Co-inventors
91Inventor score

Filing activity: Jan 24, 1975 → Apr 25, 2012

Most-cited inventions

PatentTitleAreaCited byStatus
US5994274A Dialkyl phenyl halide-substituted keto-enols for use as herbicides and pesticides Chemistry; Metallurgy 89 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
US6110872A 2,4,5-trisubstituted phenylketo-enols for use as pesticides and herbicides Chemistry; Metallurgy 67 Expired
US5045560A Pesticidal tautomers of 3-aryl-pyrrolidine-2,4-diones and use thereas Chemistry; Metallurgy 66 Expired
US5116836A 3-phenyl-pyrrolidine-2,4-dione derivatives having pesticidal activity Chemistry; Metallurgy 64 Expired
US4985063A 3-aryl-pyrrolidine-2,4-diones Chemistry; Metallurgy 62 Expired
US6133296A Substituted pyridyl keto enols Chemistry; Metallurgy 61 Expired
US6251830A Dialkyl-halogenophenyl-substituted ketoenols Chemistry; Metallurgy 60 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
US5830825A 3-aryl-tetronic acid derivatives, the production thereof and the use thereof as antiparasitic agents Chemistry; Metallurgy 55 Expired
US6511942B1 2,4,5-trisubstituted phenylketo-enols for use as pesticides and herbicides Chemistry; Metallurgy 52 Expired
US6380246B1 Alkyl-dihalogenated phenyl-substituted ketoenols useful as pesticides and herbicides Chemistry; Metallurgy 49 Expired
US5059623A Substituted cycloalkyl- and heterocyclyl-carboxanilides Chemistry; Metallurgy 45 Expired
US6469196B2 Dialkyl phenyl halide-substituted keto-enols for use as herbicides and pesticides Chemistry; Metallurgy 41 Expired
US6271180A Substituted phenyl keto enols as pesticides and herbicides Chemistry; Metallurgy 38 Expired
US6608211B1 Substituted phenyl ketoenols Chemistry; Metallurgy 37 Expired
US6388123B1 Substituted phenyl keto enols as pesticides and herbicides Chemistry; Metallurgy 36 Expired
US6486343B1 Substituted phenyl keto enols as pesticides and herbicides Chemistry; Metallurgy 35 Expired
US5091537A Intermediates for preparing 3-aryl-pyrrolidine-2,4-diones Chemistry; Metallurgy 33 Expired
US5142065A 3-aryl-pyrrolidine-2,4-diones Chemistry; Metallurgy 30 Expired
US6071937A Oxymethoxy-3-aryl-pyrone derivatives Chemistry; Metallurgy 28 Expired
US4252820A Arthropodicidal 2,2-dimethyl-3-(2-perfluoroalkyl-2-perhaloalkyl-vinyl)-cyclopropanecarbo xylic acid esters Chemistry; Metallurgy 26 Expired

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