Robert J. Ehr
34Patents
9h-index
60Co-inventors
78Inventor score
Filing activity: Aug 17, 1976 → Dec 27, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5858924A | N-(1, 2, 4! triazoloazinyl) benzenesulfonamide and pyridinesulfonamide compounds and their use as herbicides | Chemistry; Metallurgy | 46 | Expired |
| US5571775A | N-aryl[1,2,4]triazolo[1,5-a]pyridine-2-sulfonamide herbicides | Human Necessities | 44 | Expired |
| US9084418B2 | Pesticide compositions of meso-sized particles with enhanced activity | Human Necessities | 31 | Active |
| US4818273A | Substituted 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamides, compositions containing them, and their utility as herbicides | Chemistry; Metallurgy | 24 | Expired |
| US4740233A | Substituted 1,2,4-triazolo[1,5-a]-pyrimidine-2-sulfonamides and compositions and methods of controlling undesired vegetation and suppressing the nitrification of ammonium nitrogen in soil | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4670045A | Fungicidal control employing ester derivatives of 4,6-disubstituted 2-pyridinols | Chemistry; Metallurgy | 14 | Expired |
| US4755212A | Novel substituted 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamides and compositions and method for inhibiting pollen formation in corn | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5447960A | Fungicidal use of phenolic aromatic compounds | Human Necessities | 11 | Expired |
| US5201938A | N-pyrazolyl-1,2,4-triazolo[1,5-c]pyrimidine-2-sulfonamide herbicides | Human Necessities | 11 | Expired |
| US4954163A | Substituted 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamides, compositions containing them, and their utility as herbicides | Chemistry; Metallurgy | 8 | Expired |
| US5965490A | N-([1,2,4]triazoloazinyl)benzenesulfonamide and pyridinesulfonamide compounds and their use as herbicides | Chemistry; Metallurgy | 6 | Expired |
| US4215127A | Substituted 1-phenoxy-1-triazolyl-2-butanone compounds and their use as fungicides | Chemistry; Metallurgy | 5 | Expired |
| US4166854A | Substituted 1-pyridinyloxy-1-(imidazolyl)-2-butanone compounds and their use as fungicides | Chemistry; Metallurgy | 4 | Expired |
| US6005108A | N-([1,2,4]triazoloazinyl)benzenesulfonamide and pyridinesulfonamide compounds and their use as herbicides | Chemistry; Metallurgy | 4 | Expired |
| US4886883A | Substituted 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonyl chlorides | Chemistry; Metallurgy | 4 | Expired |
| US6130335A | N-([1,2,4]triazoloazinyl) benzenesulfonamide and pyridinesulfonamide compounds and their use as herbicides | Chemistry; Metallurgy | 3 | Expired |
| US5461161A | N-pyridinyl[1,2,4]triazolo[1,5-c]pyrimidine-2-sulfonamide herbicides | Chemistry; Metallurgy | 3 | Expired |
| US4983772A | 2,6-disubstituted anilines | Chemistry; Metallurgy | 3 | Expired |
| US6303814A | N-[1,2,4]triazoloazinyl) benzenesulfonamide and pyridinesulfonamide compounds and their use as herbicides | Chemistry; Metallurgy | 3 | Expired |
| US4741764A | Substituted 1,2,4-triazolo[1,5-a]-pyrimidine-2-sulfonamides and compositions and methods of controlling undesired vegetation and inhibiting sugar beet bolting | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5763359A | N-(1-ethyl-4-pyrazolyl)triazoloazinesulfonamide herbicides | Chemistry; Metallurgy | 2 | Expired |
| US4224338A | Simultaneous fungicidal and miticidal protection of plants employing certain tin compounds | Human Necessities | 2 | Expired |
| US4212869A | Substituted 1-pyridinyloxy-1-(imidazolyl)-2-butanone compounds and their use as fungicides | Chemistry; Metallurgy | 2 | Expired |
| US4455313A | Fungicidal control employing substituted pyridinols | Chemistry; Metallurgy | 2 | Expired |
| US4927812A | Morpholinyl silanes and use for control of plant diseases caused by fungi | Human Necessities | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.