Darrell D. Whitehurst
61Patents
17h-index
22Co-inventors
84Inventor score
Filing activity: Jan 19, 1971 → Jun 1, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4969522A | Polymer-coated support and its use as sand pack in enhanced oil recovery | Emerging Cross-Sectional Technologies | 87 | Expired |
| US4046668A | Double solvent extraction of organic constituents from tar sands | Chemistry; Metallurgy | 59 | Expired |
| US4659454A | Hydrocracking of heavy feeds plus light fractions with dispersed dual function catalyst | Chemistry; Metallurgy | 55 | Expired |
| US4952749A | Removal of diamondoid compounds from hydrocarbonaceous fractions | Chemistry; Metallurgy | 53 | Expired |
| US4354922A | Processing of heavy hydrocarbon oils | Chemistry; Metallurgy | 43 | Expired |
| US4982049A | Purification of hydrocarbonaceous fractions | Chemistry; Metallurgy | 33 | Expired |
| US4098727A | Insoluble polymers having functional groups containing chemically bonded Group VIII metal | Performing Operations; Transporting | 32 | Expired |
| US6551501B1 | Combined process for improved hydrotreating of diesel fuels | Chemistry; Metallurgy | 30 | Expired |
| US4145486A | Insoluble weak base exchange resin-metal compound complex | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4323698A | Resin-metal compound complex for catalyzing chemical reactions | Performing Operations; Transporting | 26 | Expired |
| US3980583A | Complexed metals bonded to inorganic oxides | Chemistry; Metallurgy | 25 | Expired |
| US4072720A | Production of alcohol | Performing Operations; Transporting | 25 | Expired |
| US4952747A | Removal of diamondoid compounds from hydrocarbonaceous fractions | Chemistry; Metallurgy | 22 | Expired |
| US4111856A | Insoluble resin-metal compound complex prepared by contacting weak base ion exchange resin with solution of metal-ligand | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4334977A | Method for the generation of recycle solvents in coal liquefaction | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4908341A | Method for reactivating spent catalyst by contact with one or more aromatic compounds | Performing Operations; Transporting | 19 | Expired |
| US3954883A | Catalytic polystep reactions | Performing Operations; Transporting | 19 | Expired |
| US4127475A | Process for the isolation of chemicals from processed coals | Chemistry; Metallurgy | 16 | Expired |
| US5401393A | Reactive adsorbent and method for removing mercury from hydrocarbon fluids | Performing Operations; Transporting | 16 | Expired |
| US4487972A | Production of oxygenated compounds | Chemistry; Metallurgy | 15 | Expired |
| US4133646A | Phenolic recycle solvent in two-stage coal liquefaction process | Chemistry; Metallurgy | 15 | Expired |
| US4447310A | Production of distillates by the integration of supercritical extraction and gasification through methanol to gasoline | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4892646A | Method for treating dewaxing catalysts | Chemistry; Metallurgy | 15 | Expired |
| US4329221A | Upgrading of hydrocarbon feedstock | Chemistry; Metallurgy | 15 | Expired |
| US4136021A | Sorbent for heavy metals | Performing Operations; Transporting | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.