Charles R. Marston
17Patents
7h-index
24Co-inventors
66Inventor score
Filing activity: May 15, 1991 → Mar 28, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6080696A | Method for cleaning fouled ion exchange resins | Performing Operations; Transporting | 33 | Expired |
| US5155261A | Process for acetic acid preparation and heterogenous catalyst for same | Emerging Cross-Sectional Technologies | 25 | Expired |
| US11365128B2 | Process for selective adsorption and recovery of lithium from natural and synthetic brines | Chemistry; Metallurgy | 23 | Active |
| US10604414B2 | System and process for recovery of lithium from a geothermal brine | Chemistry; Metallurgy | 19 | Active |
| US9068247B2 | Nickel and cobalt recovery using continuous ion exchange | Emerging Cross-Sectional Technologies | 14 | Active |
| US5574180A | Process for recovering phytic acid, lactic acid or inositol | Chemistry; Metallurgy | 8 | Expired |
| US7811457B2 | Alkaline regeneration of N-methyl-D-glucamine functional resins | Emerging Cross-Sectional Technologies | 8 | Active |
| US6137004A | Processes for recovering citric acid | Chemistry; Metallurgy | 4 | Expired |
| US8658114B2 | Methods for recovering cobalt from copper solvent extraction raffinate | Emerging Cross-Sectional Technologies | 1 | Active |
| US9321871B2 | Water insoluble copolymer including pendant aryl epoxide groups | Chemistry; Metallurgy | 1 | Active |
| US5504161A | Vinylpyridine polymer support complexed with boron trifluoride | Chemistry; Metallurgy | 1 | Expired |
| US9099208B2 | Alpha-particle emitter removal | Emerging Cross-Sectional Technologies | 0 | Active |
| US9187588B2 | Elution of metal ions from chelating resin using amino acid eluant | Emerging Cross-Sectional Technologies | 0 | Active |
| US11904297B1 | Process for manufacturing lithium selective adsorption/separation media | Performing Operations; Transporting | 0 | Active |
| US11958753B2 | Process for selective adsorption and recovery of lithium from natural and synthetic brines | Chemistry; Metallurgy | 0 | Active |
| US8900342B2 | Process for separating copper and/or nickel from cobalt containing solutions | Emerging Cross-Sectional Technologies | 0 | Active |
| US12227426B2 | Process for recovery of lithium from a geothermal brine | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.