Stephen R. Vasconcellos
35Patents
10h-index
47Co-inventors
75Inventor score
Filing activity: Jul 20, 1978 → Jul 26, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5234604A | Water soluble block copolymers and methods of use therof | Chemistry; Metallurgy | 38 | Expired |
| US4201552A | Coal-oil slurry compositions | Chemistry; Metallurgy | 22 | Expired |
| US5292441A | Quaternized polyvinylamine water clarification agents | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4906386A | Flocculation of coal fines with polyelectrolytes and electrolyte | Chemistry; Metallurgy | 17 | Expired |
| US5182331A | Water soluble block copolymers and methods of use thereof | Chemistry; Metallurgy | 16 | Expired |
| US6666975B1 | Method of reducing hydrogen sulfide odor emissions from an aqueous medium | Chemistry; Metallurgy | 14 | Expired |
| US5183576A | Cationic polymers for sludge dewatering | Chemistry; Metallurgy | 14 | Expired |
| US5169536A | Detoxification agents for surfactant based biocides | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5643462A | Composition and method for water clarification | Chemistry; Metallurgy | 13 | Expired |
| US7611632B1 | Method of conditioning mixed liquor using a tannin containing polymer | Emerging Cross-Sectional Technologies | 11 | Active |
| US4657702A | Partial oxidation of petroleum coke | Chemistry; Metallurgy | 9 | Expired |
| US4525280A | Process for separating a water dispersion of ash, slag and char particulate matter | Chemistry; Metallurgy | 8 | Expired |
| US8858803B2 | Methods of preparing novel halide anion free quaternary ammonium salt monomers, polymerization methods therefor, and methods of use of the resulting polymers | Chemistry; Metallurgy | 8 | Active |
| US5720887A | Methods for sludge dewatering | Chemistry; Metallurgy | 7 | Expired |
| US5183575A | Methods for the flocculation of coal fines and insoluble metals in coal mine waters | Chemistry; Metallurgy | 7 | Expired |
| US5368744A | Methods for treating wastewater | Chemistry; Metallurgy | 7 | Expired |
| US4623359A | Aqueous slurries of solid carbonaceous fuel | Chemistry; Metallurgy | 7 | Expired |
| US5100561A | Cationic polymers for sludge dewatering | Chemistry; Metallurgy | 7 | Expired |
| US5846436A | Composition and method for water clarification | Chemistry; Metallurgy | 5 | Expired |
| US4708819A | Reduction of vanadium in recycle petroleum coke | Chemistry; Metallurgy | 5 | Expired |
| US4681700A | Partial oxidation of upgraded petroleum coke | Chemistry; Metallurgy | 4 | Expired |
| US5486296A | Detoxification for quaternary ammonium compounds with lignosulfonates | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7722841B2 | Polymeric chelant and coagulant to treat metal-containing wastewater | Chemistry; Metallurgy | 3 | Active |
| US6743421B2 | Method for odor control | Performing Operations; Transporting | 2 | Expired |
| US8557125B2 | Treatment additives, methods for making and methods for clarifying aqueous media | Chemistry; Metallurgy | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.