Robert Kurt Graupner
7Patents
2h-index
6Co-inventors
44Inventor score
Filing activity: Dec 10, 1993 → Dec 8, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5672214A | Concrete solar cell | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5415700A | Concrete solar cell | Emerging Cross-Sectional Technologies | 12 | Expired |
| US11180371B2 | Integrated synthesis of commodity chemicals from waste plastic | Chemistry; Metallurgy | 2 | Active |
| US6002262A | Method of and apparatus for measuring flatness of semiconductor wafers that have not been subjected to donor-killer treatment | Electricity | 1 | Expired |
| US11591533B1 | Removal of hydrogen sulfide and other acids from hydrocarbon gas | Chemistry; Metallurgy | 1 | Active |
| US12246996B2 | Recycling reduced-carbon materials | Chemistry; Metallurgy | 0 | Active |
| US12178151B2 | Fertilizer from hydrolyzed cyanamide compounds | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.