Ernst Felder
17Patents
12h-index
22Co-inventors
78Inventor score
Filing activity: Nov 24, 1975 → Jun 7, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4001323A | Water-soluble, non-ionizing hydroxy-containing amide derivatives of 2,4,6-triiodo-isophthalic acid | Human Necessities | 73 | Expired |
| US4916246A | Paramagnetic chelates useful for NMR imaging | Human Necessities | 45 | Expired |
| US4980502A | Paramagnetic chelates | Human Necessities | 38 | Expired |
| US4348377A | New derivatives of 2,4,6-triiodo-isophthalic acid, proceses for their synthesis and X-ray contrasting materials containing these | Chemistry; Metallurgy | 35 | Expired |
| US4588574A | Process for the preparation of barium sulfate of increased flowability and density, suitable as a radio-opaque component in radiographic contrast agents, product obtained according to this process and the radiographic contrast agent produced therefrom | Chemistry; Metallurgy | 35 | Expired |
| US4352788A | Derivatives of 2,4,6-triiodo-isophthalic acid, processes for their synthesis and X-ray contrasting materials containing these | Chemistry; Metallurgy | 29 | Expired |
| US4246164A | Process for the resolution of (+)- and (-)-6-methoxy-.alpha.-methyl-2-naphthaleneacetic acid | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4139605A | Water-soluble, non-ionizing, radiopaque compounds and contrast compositions containing the same | Chemistry; Metallurgy | 27 | Expired |
| US5733528A | Paramagnetic chelates for nuclear magnetic resonance diagnosis | Chemistry; Metallurgy | 25 | Expired |
| US5695742A | Aqueous injectable formulations useful for radiodiagnosis comprising iodinated aromatic compounds used as X-ray contrast media | Human Necessities | 23 | Expired |
| US5132409A | Macrocyclic chelating agents and chelates thereof | Chemistry; Metallurgy | 22 | Expired |
| US5182370A | Paramagnetic chelates | Human Necessities | 15 | Expired |
| US5023379A | Process for the preparation of hydroxyamines | Chemistry; Metallurgy | 9 | Expired |
| US4044048A | Radiopaque esters of tetra-iodoterephthalic acid | Chemistry; Metallurgy | 5 | Expired |
| US4503252A | Process for the preparation of serinol and of serinol derivatives, and products obtained therefrom | Chemistry; Metallurgy | 4 | Expired |
| US5710271A | Process for the preparation and separation of diastereomeric salts of folinic acid | Chemistry; Metallurgy | 3 | Expired |
| US4278808A | Method of preparing a 3-alkoxy-2-alkyl-propionic acid ester derivative and intermediate therefor | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.