Ingeborg Hammann
234Patents
15h-index
83Co-inventors
85Inventor score
Filing activity: Jan 9, 1973 → Jun 19, 1985
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4698333A | Use of substituted malonic acid derivatives as agents for combating pests | Chemistry; Metallurgy | 51 | Expired |
| US4005223A | Insecticidal 2-chloro-4'-[N-(N'-benzoyl)-ureido]-diphenyl ethers | Chemistry; Metallurgy | 42 | Expired |
| US4139636A | N-Phenyl-N'-benzoyl-ureas and pesticidal compositions and uses therefor | Chemistry; Metallurgy | 41 | Expired |
| US4485252A | 2-Phenyl-alk-1-enyl-cyclopropane-carboxylic acid intermediates | Human Necessities | 38 | Expired |
| US3992553A | Benzoylureido-diphenyl ether insecticides | Chemistry; Metallurgy | 33 | Expired |
| US4533676A | 2,5-Dihalogenobenzoyl-(thio)urea insecticides | Chemistry; Metallurgy | 28 | Expired |
| US4252820A | Arthropodicidal 2,2-dimethyl-3-(2-perfluoroalkyl-2-perhaloalkyl-vinyl)-cyclopropanecarbo xylic acid esters | Chemistry; Metallurgy | 26 | Expired |
| US4041177A | 4-Nitro-4'-[N-(N'-benzoyl)-ureido]-diphenyl ethers | Chemistry; Metallurgy | 24 | Expired |
| US4085226A | Insecticidal N-(substituted phenyl)-N'-benzoyl ureas | Chemistry; Metallurgy | 23 | Expired |
| US4218469A | Combating arthropods with 3-phenoxy-fluoro-benzyl carboxylic acid esters | Chemistry; Metallurgy | 23 | Expired |
| US4183950A | Combating arthropods with 2,2-dimethyl-3-vinyl-cyclopropane carboxylic acid esters of halogenated benzyl alcohols | Human Necessities | 22 | Expired |
| US4276310A | Combating pests with N-(4-substituted-phenyl)-N'-(2-substituted-benzoyl)-thioureas | Human Necessities | 21 | Expired |
| US4068002A | 2,4-Dichloro-4-benzoylureido-diphenyl ethers | Chemistry; Metallurgy | 20 | Expired |
| US4127652A | Combating pests with O-alkyl-O-[pyrimidin(5)yl]-(thiono)(thiol) phosphoric(phosphonic) acid esters and ester-amides | Chemistry; Metallurgy | 19 | Expired |
| US4277499A | Combating insects with N-(substituted-phenyl)-N-(2-chloro-6-fluoro-benzoyl)-ureas | Chemistry; Metallurgy | 15 | Expired |
| US4103022A | Combating arthropods with 3-(2,2,4,4-tetrafluoro-benz-1,3-dioxin-6-yl)-1-(substituted benzoyl)-ureas | Human Necessities | 14 | Expired |
| US4179277A | 4,5-Dichloroimidazole-2-carboxylic acid derivatives | Chemistry; Metallurgy | 14 | Expired |
| US4271186A | Stilbene compounds and insecticidal/acaricidal compositions | Chemistry; Metallurgy | 13 | Expired |
| US3961061A | Pesticidal 2-amidocarbonylthiobarbituric acids | Chemistry; Metallurgy | 12 | Expired |
| US4194008A | N-aryl-N'-(cyclo)-alkyl-thioureas and their use as agents for combating animal pests and plant pests | Chemistry; Metallurgy | 12 | Expired |
| US3951975A | O-Alkyl-S-alkyl-O-[2-substituted-pyrimidin(4)yl]thionothiolphosphoric acid esters | Chemistry; Metallurgy | 11 | Expired |
| US4418073A | Combating pests with N-acylated N-methyl-carbamic acid O-pyrazol-4-yl esters | Chemistry; Metallurgy | 11 | Expired |
| US4234600A | Combating arthropods with N-benzoyl-N'-tert.-alkoxycarbonylphenyl-(thio) ureas | Chemistry; Metallurgy | 11 | Expired |
| US4325948A | Combating pests with 2-cycloalkyl-pyrimidin-5-yl-(thiono) (thiol)-phosphoric (phosphonic) acid esters and ester-amides | Chemistry; Metallurgy | 11 | Expired |
| US4261920A | 3-Phenoxy-fluoro-benzyl alcohol intermediates | Chemistry; Metallurgy | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.