Rudolf Kummer
66Patents
12h-index
70Co-inventors
87Inventor score
Filing activity: Oct 15, 1970 → Feb 12, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4454358A | Continuous production of ethanol and plural stage distillation of the same | Emerging Cross-Sectional Technologies | 158 | Expired |
| US4832702A | Polybutyl-and polyisobutylamines, their preparation, and fuel compositions containing these | Chemistry; Metallurgy | 135 | Expired |
| US5530127A | Preparation of amines | Emerging Cross-Sectional Technologies | 83 | Expired |
| US4859210A | Motor fuel or lubricant composition containing polybutyl or polyisobutyl derivatives | Chemistry; Metallurgy | 66 | Expired |
| US4021463A | Regeneration and separation of rhodium-containing or iridium-containing catalysts from distillation residues following hydroformylation | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4113754A | Isolation and regeneration of rhodium-containing catalysts from distillation residues of hydroformylation reactions | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5142087A | Process for the preparation of dialkyl carbonates | Chemistry; Metallurgy | 15 | Expired |
| US3941848A | Manufacture of predominantly straight-chain aldehydes | Chemistry; Metallurgy | 13 | Expired |
| US4929758A | Preparation of tert-butylamine from isobutene | Emerging Cross-Sectional Technologies | 12 | Expired |
| US3947503A | Manufacture of 1,6-hexanediol from butadiene | Chemistry; Metallurgy | 12 | Expired |
| US4101588A | Production of bis-(dimethyl) acetals of hexane dialdehydes | Performing Operations; Transporting | 12 | Expired |
| US4169956A | Manufacture of butanedicarboxylic acid esters | Chemistry; Metallurgy | 12 | Expired |
| US4523027A | Purification of carboxylates containing aldehydes, acetals and/or unsaturated compounds | Chemistry; Metallurgy | 11 | Expired |
| US4360692A | Preparation of formylvalerates | Chemistry; Metallurgy | 10 | Expired |
| US4171451A | Manufacture of butanedicarboxylic acid esters | Chemistry; Metallurgy | 10 | Expired |
| US4529815A | Preparation of 4-pentenoates | Chemistry; Metallurgy | 9 | Expired |
| US4259520A | Preparation of butanedicarboxylic acid esters | Chemistry; Metallurgy | 8 | Expired |
| US4256909A | Preparation of dimethyl butanedicarboxylates | Chemistry; Metallurgy | 8 | Expired |
| US4801738A | Preparation of .delta.-formylvalerates | Chemistry; Metallurgy | 8 | Expired |
| US4550195A | Manufacture of pent-3-enoic acid and its alkyl esters | Chemistry; Metallurgy | 8 | Expired |
| US3959385A | Production of alcohols and/or aldehydes | Chemistry; Metallurgy | 8 | Expired |
| US3980670A | Manufacture of methacrylic acid and butyrolactone | Chemistry; Metallurgy | 7 | Expired |
| US4745228A | Preparation of cyclic ketones | Chemistry; Metallurgy | 7 | Expired |
| US4568653A | Working up of hydroformylation or carbonylation reaction mixtures | Chemistry; Metallurgy | 7 | Expired |
| US4400549A | Hydroformylation of olefinically unsaturated compounds | Chemistry; Metallurgy | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.