David Dreisinger
29Patents
8h-index
47Co-inventors
75Inventor score
Filing activity: Oct 19, 1993 → Aug 5, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5536297A | Gold recovery from refractory carbonaceous ores by pressure oxidation and thiosulfate leaching | Emerging Cross-Sectional Technologies | 47 | Expired |
| US5785736A | Gold recovery from refractory carbonaceous ores by pressure oxidation, thiosulfate leaching and resin-in-pulp adsorption | Emerging Cross-Sectional Technologies | 45 | Expired |
| US5582737A | Ion exchange and regeneration process for separation and removal of iron (III) ions from aqueous sulfuric acid metal ion-containing solutions | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5622615A | Process for electrowinning of copper matte | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6632264B2 | Gold recovery from thiosulfate leaching | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6315812A | Oxidative pressure leach recovery using halide ions | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6537440B1 | Processing copper sulphide ores | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5948264A | Ion exchange and regeneration process for separation and removal of iron (III) ions from aqueous sulfuric acid metal ion-containing solutions | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5366715A | Method for selectively removing antimony and bismuth from sulphuric acid solutions | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6503293B1 | Process for the extraction of copper | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6200545A | Cyanide recovery by solvent extraction | Emerging Cross-Sectional Technologies | 4 | Expired |
| US8585991B2 | Method for recovering indium, silver, gold and rare, precious and base metals from complex oxide and sulfide ores | Emerging Cross-Sectional Technologies | 4 | Active |
| US8741238B2 | Metathetic copper concentrate enrichment | Emerging Cross-Sectional Technologies | 3 | Active |
| US10738370B2 | Recovery of cesium from epithermal mineral deposits | Emerging Cross-Sectional Technologies | 3 | Active |
| US9039806B2 | Recycling of solids in oxidative pressure leaching of metals using halide ions | Emerging Cross-Sectional Technologies | 3 | Active |
| US7604793B2 | Iron oxide precipitation from acidic iron salt solutions | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7037482B2 | Solvent extraction of a halide from a aqueous sulphate solution | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7799295B2 | Ore leach method with aqueous sulfuric acid containing ferric ions | Emerging Cross-Sectional Technologies | 2 | Active |
| US11370677B2 | Rapid reduction of aqueous selenate with chromous ions | Chemistry; Metallurgy | 1 | Active |
| US8361191B2 | Low acid leaching of nickel and cobalt from lean iron-containing nickel ores | Emerging Cross-Sectional Technologies | 1 | Active |
| US12065715B2 | Polymetallic nodule mineral processing | Emerging Cross-Sectional Technologies | 0 | Active |
| US10273562B2 | Acid leaching of rare earth minerals | Emerging Cross-Sectional Technologies | 0 | Active |
| US11634789B2 | Selective lithium extraction from brines | Emerging Cross-Sectional Technologies | 0 | Active |
| US10442703B2 | Anion removal from waste water | Chemistry; Metallurgy | 0 | Active |
| US9322104B2 | Recovering lead from a mixed oxidized material | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.