William R. Epperly
18Patents
12h-index
7Co-inventors
67Inventor score
Filing activity: Jul 10, 1978 → May 23, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4777024A | Multi-stage process for reducing the concentration of pollutants in an effluent | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4780289A | Process for nitrogen oxides reduction and minimization of the production of other pollutants | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5057293A | Multi-stage process for reducing the concentration of pollutants in an effluent | Performing Operations; Transporting | 34 | Expired |
| US4803059A | Process for the reduction of nitrogen oxides in an effluent using a hydroxy amino hydrocarbon | Performing Operations; Transporting | 27 | Expired |
| US5017347A | Process for nitrogen oxides reduction and minimization of the production of other pollutants | Performing Operations; Transporting | 25 | Expired |
| US4770863A | Process for the reduction of nitrogen oxides in an effluent | Performing Operations; Transporting | 23 | Expired |
| US4844878A | Process for the reduction of nitrogen oxides in an effluent | Performing Operations; Transporting | 18 | Expired |
| US4863704A | Multi-stage process for reducing the concentration of pollutants in an effluent using an ammonium salt | Performing Operations; Transporting | 18 | Expired |
| US4863705A | Process for the reduction of nitrogen oxides in an effluent | Performing Operations; Transporting | 16 | Expired |
| US4902488A | Process for nitrogen oxides reduction with minimization of the production of other pollutants | Performing Operations; Transporting | 15 | Expired |
| US4830839A | Ammonia scrubbing | Performing Operations; Transporting | 13 | Expired |
| US4877591A | Process for the reduction of nitrogen oxides in an effluent using sugar | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4877590A | Process for nitrogen oxides reduction with minimization of the production of other pollutants | Performing Operations; Transporting | 11 | Expired |
| US5069720A | Method and composition for the reduction of ammonia emissions from non-acidic residue | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4888165A | Process for the reduction of nitrogen oxides in an effluent using a heterocyclic hydrocarbon | Performing Operations; Transporting | 9 | Expired |
| US4873066A | Low temperature process for the reduction of nitrgen oxides in an effluent | Performing Operations; Transporting | 9 | Expired |
| US4822577A | Method for the reduction of sulfur trioxide in an effluent | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4332667A | Liquefaction process for solid carbonaceous materials containing alkaline earth metal humates | Emerging Cross-Sectional Technologies | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.