Wayne W. Hazen
52Patents
12h-index
41Co-inventors
84Inventor score
Filing activity: May 31, 1977 → Dec 29, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6451088B1 | Method for improving metals recovery using high temperature leaching | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6149883A | Pressure oxidation process for the production of molybdenum trioxide from molybdenite | Chemistry; Metallurgy | 19 | Expired |
| US6626979B2 | Method for improving metals recovery using high temperature pressure leaching | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7341700B2 | Method for recovery of metals from metal-containing materials using medium temperature pressure leaching | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5078786A | Process for recovering metal values from jarosite solids | Emerging Cross-Sectional Technologies | 14 | Expired |
| US8420048B1 | System and method for parallel solution extraction of one or more metal values from metal-bearing materials | Emerging Cross-Sectional Technologies | 14 | Active |
| US6972107B2 | System for direct electrowinning of copper | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6676909B2 | Method for recovery of metals from metal-containing materials using medium temperature pressure leaching | Emerging Cross-Sectional Technologies | 14 | Expired |
| US8003064B2 | Controlled copper leach recovery circuit | Emerging Cross-Sectional Technologies | 13 | Active |
| US6451089B1 | Process for direct electrowinning of copper | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6680034B2 | Method for recovering metal values from metal-containing materials using high temperature pressure leaching | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6663689B2 | Process for direct electrowinning of copper | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7125436B2 | Method for improving metals recovery using high temperature pressure leaching | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6893482B2 | Method for improving metals recovery using high temperature pressure leaching | Emerging Cross-Sectional Technologies | 11 | Expired |
| US8372360B2 | Controlled metal leach recovery circuit | Chemistry; Metallurgy | 9 | Active |
| US8372361B2 | Copper recovery circuit | Emerging Cross-Sectional Technologies | 9 | Active |
| US6497745B2 | Method for processing elemental sulfur-bearing materials using high temperature pressure leaching | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7485216B2 | Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solvent/solution extraction | Emerging Cross-Sectional Technologies | 9 | Active |
| US7517384B2 | Method for improving metals recovery using high temperature pressure leaching | Emerging Cross-Sectional Technologies | 9 | Active |
| US7462272B2 | Process for multiple stage direct electrowinning of copper | Emerging Cross-Sectional Technologies | 7 | Active |
| US9169533B2 | System and method including multi-circuit solution extraction for recovery of metal values from metal-bearing materials | Emerging Cross-Sectional Technologies | 7 | Active |
| US7476308B2 | Process for multiple stage direct electrowinning of copper | Emerging Cross-Sectional Technologies | 7 | Active |
| US7736488B2 | Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solvent/solution extraction | Emerging Cross-Sectional Technologies | 6 | Active |
| US9447483B2 | System and method for parallel solution extraction of one or more metal values from metal-bearing materials | Emerging Cross-Sectional Technologies | 6 | Active |
| US9023313B2 | System and method for parallel solution extraction of one or more metal values from metal-bearing materials | Emerging Cross-Sectional Technologies | 6 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.