Darrell Sparks
15Patents
2h-index
13Co-inventors
47Inventor score
Filing activity: Oct 4, 2004 → Sep 14, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7638314B2 | Production of biodiesel and other valuable chemicals from wastewater treatment plant sludges | Emerging Cross-Sectional Technologies | 47 | Expired |
| US7816000B2 | Plastic sheet offering matte appearance and method of preparation | Emerging Cross-Sectional Technologies | 11 | Active |
| US10161371B2 | Opposed piston three nozzle piston bowl design | Emerging Cross-Sectional Technologies | 1 | Active |
| USPP29422P3 | Pecan tree named ‘Tanner’ | General | 0 | Active |
| US11480139B1 | Exhaust gas recovery system with high-pressure mixer | Emerging Cross-Sectional Technologies | 0 | Active |
| USPP26705P3 | Pecan tree named ‘Tom’ | General | 0 | Active |
| USPP29316P2 | Pecan tree named ‘Whiddon’ | General | 0 | Active |
| US11499489B2 | Annular ring mixer with vanes | Performing Operations; Transporting | 0 | Active |
| USPP25465P3 | Pecan tree named ‘Huffman’ | General | 0 | Active |
| US11225936B1 | Exhaust gas recirculation system for a vehicle engine | Mechanical Engineering; Lighting; Heating | 0 | Active |
| USPP20867P3 | Pecan tree named ‘BYRD’ | General | 0 | Active |
| USPP24373P2 | Pecan tree named ‘Cunard’ | General | 0 | Active |
| USPP23335P2 | Pecan tree named ‘Morrill’ | General | 0 | Active |
| USPP25740P3 | Pecan tree named ‘Treadwell’ | General | 0 | Active |
| US11506153B2 | EGR pre-mixer for improved mixing | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.