Charles A. Roberts
30Patents
5h-index
26Co-inventors
69Inventor score
Filing activity: Sep 15, 1972 → Jan 21, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4802327A | Mower attachment | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4303959A | Fail safe surge arrester systems | Electricity | 13 | Expired |
| US5173371A | Battery to prevent cell reversal | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4133019A | Air gap back-up surge arrester | Electricity | 9 | Expired |
| US5441108A | Fluid spill catching, containing, collection and recovery system for wellheads | Fixed Constructions | 5 | Expired |
| US9461349B2 | Rechargeable metal NxOy gas battery system | Emerging Cross-Sectional Technologies | 5 | Active |
| US10434471B2 | Copper oxides supported on spinel oxides as catalysts for low temperature direct NOx decomposition | Emerging Cross-Sectional Technologies | 2 | Active |
| US3985077A | Ogival lens warhead | Emerging Cross-Sectional Technologies | 2 | Expired |
| US10143965B1 | Palladium oxide dispersed on spinel oxides as catalysts for direct NOx decomposition | Emerging Cross-Sectional Technologies | 1 | Active |
| US9283548B2 | Ceria-supported metal catalysts for the selective reduction of NOx | Emerging Cross-Sectional Technologies | 1 | Active |
| US11311861B2 | Zinc doped manganese-iron spinel catalyst material and method of making and using the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US12161971B2 | Catalyst for direct NOx decomposition and a method for making and using the catalyst | Emerging Cross-Sectional Technologies | 0 | Active |
| US11154816B2 | Palladium oxide supported on spinels for NOx storage | Emerging Cross-Sectional Technologies | 0 | Active |
| US11278871B2 | Direct no decomposition catalyst | Performing Operations; Transporting | 0 | Active |
| US9815044B2 | Ceria-supported metal catalysts for the selective reduction of NOX | Emerging Cross-Sectional Technologies | 0 | Active |
| US9331369B2 | Rechargeable metal nitric oxide gas battery | Emerging Cross-Sectional Technologies | 0 | Active |
| US11541373B2 | Mixed oxide catalyst for oxygen storage applications and a method for making the catalyst | Emerging Cross-Sectional Technologies | 0 | Active |
| US11969715B2 | Dual dispersed MOx-CuOx/Co3O4 supported metal oxide catalysts for direct NOx decomposition | Emerging Cross-Sectional Technologies | 0 | Active |
| US11471873B2 | Microwave synthesis of iron oxide catalysts for cold start NOx removal | Emerging Cross-Sectional Technologies | 0 | Active |
| US10143966B1 | Potassium dispersed on spinel oxides as catalysts for direct NOx decomposition | Emerging Cross-Sectional Technologies | 0 | Active |
| US9527033B2 | Mixed metal oxide catalyst | Emerging Cross-Sectional Technologies | 0 | Active |
| US11110432B2 | Multi-transition metal doped copper-cobalt spinel catalyst material for NOx decomposition | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10239047B1 | Direct NOx decomposition catalyst with improved activity and selectivity | Emerging Cross-Sectional Technologies | 0 | Active |
| US11559792B2 | Zinc manganese-iron spinel with an alkali metal stabilizer as an oxygen storage material resistant to rich/lean aging | Emerging Cross-Sectional Technologies | 0 | Active |
| US10293328B2 | Metal tungstates for use as nitrogen oxides reduction catalysts | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.