Robert E. Leonard
24Patents
11h-index
11Co-inventors
72Inventor score
Filing activity: Feb 23, 1976 → Nov 13, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4290880A | Supercritical process for producing deasphalted demetallized and deresined oils | Chemistry; Metallurgy | 51 | Expired |
| US5003774A | Apparatus for soot removal from exhaust gas | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4305814A | Energy efficient process for separating hydrocarbonaceous materials into various fractions | Chemistry; Metallurgy | 26 | Expired |
| US8931327B2 | Dynamic canine tracking method for hazardous and illicit substances | Physics | 19 | Active |
| US5125230A | Soot removal from exhaust gas | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4164466A | Method of improving yield in a coal liquefaction product deashing process | Chemistry; Metallurgy | 15 | Expired |
| US4908047A | Soot removal from exhaust gas | Emerging Cross-Sectional Technologies | 15 | Expired |
| US10123509B2 | Dynamic canine tracking method for hazardous and illicit substances | Physics | 13 | Active |
| US8959982B2 | Dynamic canine tracking method for hazardous and illicit substances | Physics | 12 | Active |
| US9763426B2 | Dynamic canine tracking method for hazardous and illicit substances | Physics | 12 | Active |
| US4090957A | System for separating soluble and insoluble coal products from a feed mixture | Performing Operations; Transporting | 11 | Expired |
| US4090958A | Coal processing system for producing a stream of flowable insoluble coal products | Chemistry; Metallurgy | 7 | Expired |
| US4729832A | Method for removal of coal tar based contaminants from waste waters | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4119524A | Coal deashing process having improved solvent recovery techniques | Chemistry; Metallurgy | 6 | Expired |
| US4162957A | Method of feeding solids to a process unit | Chemistry; Metallurgy | 5 | Expired |
| US4249951A | Process for utilizing mineral-containing residue from coal liquefaction processes | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4244812A | System for producing a powdery composition comprising coal products in a coal deashing process | Chemistry; Metallurgy | 5 | Expired |
| US4070267A | Coal processing system for reducing the amount of insoluble coal products in a light fraction stream | Chemistry; Metallurgy | 3 | Expired |
| US4668539A | Process for the preservation of wood products | Performing Operations; Transporting | 2 | Expired |
| US4162964A | Method of handling ash-rich material in a coal deashing process | Chemistry; Metallurgy | 2 | Expired |
| US4153538A | Use of deashed coal as a flushing agent in a coal deashing process | Chemistry; Metallurgy | 1 | Expired |
| US4670992A | Process for treating wood products | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US5300273A | Process for producing a vapor mixture of titanium tetrachloride and aluminum trichloride | Chemistry; Metallurgy | 0 | Expired |
| US11140870B2 | Dynamic canine tracking method for hazardous and illicit substances | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.