Ernst Kysela
37Patents
6h-index
61Co-inventors
72Inventor score
Filing activity: Jul 22, 1976 → Apr 8, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4978769A | Process for introducing fluorine atoms into aromatic rings by nucleophilic exchange | Chemistry; Metallurgy | 18 | Expired |
| US5744633A | Process for the production of diurethanes and their use for the production of diisocyanates | Chemistry; Metallurgy | 14 | Expired |
| US4767444A | Herbicidal and microbiocidal 2-trifluoromethyl-benzimidazoles | Chemistry; Metallurgy | 13 | Expired |
| US5319074A | Bifunctional reactive dyestuffs containing vinylsulphone or alkylsulphone groups and a 2,4 difluoro pyrimidine group | Chemistry; Metallurgy | 8 | Expired |
| US7250521B2 | Method for production of Δ1-pyrrolines | Chemistry; Metallurgy | 7 | Expired |
| US4078008A | Process for the preparation of dienes | Chemistry; Metallurgy | 6 | Expired |
| US4990661A | Process for the preparation of benzoic acid derivatives | Chemistry; Metallurgy | 5 | Expired |
| US4780126A | 3-substituted 1-(2-halogenoalkoxy-benzenesulphonyl)-3-heteroaryl-(thio)ureas | Chemistry; Metallurgy | 5 | Expired |
| US6455725B1 | Substituted cinnamic acids and cinnamic acid esters | Chemistry; Metallurgy | 5 | Expired |
| US4588844A | Process for preparing aromatic aldehydes | Chemistry; Metallurgy | 5 | Expired |
| US4549994A | Preparation of new fluoropivalic acid fluorides | Chemistry; Metallurgy | 5 | Expired |
| US4792635A | Symmetric benzophenones substituted by groups containing fluorine | Chemistry; Metallurgy | 4 | Expired |
| US4956370A | Antimycotically active substituted 2-aminothiazoles | Chemistry; Metallurgy | 4 | Expired |
| US5142092A | Fluorine-containing acetophenones optionally halogenated on the CH.sub.3 -group and their precurser fluorine-containing benzonitriles | Chemistry; Metallurgy | 4 | Expired |
| US4927454A | Substituted 1-benzylsulphonyl-3-heteroaryl-(thio)urea herbicides | Chemistry; Metallurgy | 3 | Expired |
| US4851160A | Process for the preparation of benzoic acid derivatives | Chemistry; Metallurgy | 3 | Expired |
| US4329458A | Process for the preparation of 2,4,6-trifluoro-1,3,5-triazine | Chemistry; Metallurgy | 3 | Expired |
| US5068343A | 4-substituted 5-chloro-2-hydrazinothiazoles | Chemistry; Metallurgy | 3 | Expired |
| US4990637A | 1-benzylsulphonyl-3-heteroaryl-(thio)urea herbicides | Chemistry; Metallurgy | 3 | Expired |
| US5025030A | Hydroxyalkinyl-azolyl derivatives | Chemistry; Metallurgy | 3 | Expired |
| US4806147A | Substituted 1-benzylsulphonyl-3-heteroaryl-(thio)urea herbicides | Chemistry; Metallurgy | 3 | Expired |
| US6137011A | Process for the preparation of bistrifluoromethylbenzylamines | Chemistry; Metallurgy | 2 | Expired |
| US5097050A | Aryl-alkinyl halocycloalkyl oxiranes | Chemistry; Metallurgy | 1 | Expired |
| US4755621A | Process for the preparation of 2,3,5,6-tetrafluorobenzoic acid, and the new compounds 2,3,5,6-tetrachloro-4-trifluoromethyl-benzoyl chloride and 2,3,5,6-tetrafluoro-4-trifluoromethyl-benzoyl fluoride | Chemistry; Metallurgy | 1 | Expired |
| US4216173A | 1,1-Dichloro-4-methyl-3-hydroxy-pent-1-ene | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.