David C. Long
18Patents
7h-index
27Co-inventors
66Inventor score
Filing activity: Jun 7, 1991 → Dec 14, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7313838B2 | Powered cleaner/polisher | Chemistry; Metallurgy | 39 | Expired |
| US7565712B2 | Powered cleaner/polisher | Human Necessities | 24 | Active |
| US5143647A | Synthesis gas generation startup process (C-2556) | Performing Operations; Transporting | 22 | Expired |
| US6642281B1 | Fischer-tropsch process | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5985178A | Low hydrogen syngas using CO.sub.2 and a nickel catalyst | Chemistry; Metallurgy | 13 | Expired |
| US5498638A | Staged hydrocarbon synthesis process | Chemistry; Metallurgy | 13 | Expired |
| US6787576B2 | Linear alpha olefins from natural gas-derived synthesis gas over a nonshifting cobalt catalyst | Chemistry; Metallurgy | 11 | Expired |
| US6973362B2 | Methods for evaluating chemical components based on their proposed function in the product they are to be used in | Physics | 6 | Expired |
| US6624204B1 | Carbon monoxide hydrogenation process | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7378452B2 | Filtration system for slurry hydrocarbon synthesis process using both small and large pore filter elements | Chemistry; Metallurgy | 6 | Active |
| US7096084B2 | Methods for evaluating chemical components based on their proposed function in the product they are to be used in | Physics | 5 | Expired |
| US8487148B2 | Hydrothermal treatment of biomass with heterogeneous catalyst | Emerging Cross-Sectional Technologies | 2 | Active |
| US8704020B2 | Catalytic hydrothermal treatment of biomass | Emerging Cross-Sectional Technologies | 2 | Active |
| US9034595B2 | Integrated bioprocessing for fuel production | Emerging Cross-Sectional Technologies | 1 | Active |
| US8022109B2 | Product filtration system for slurry reactors | Performing Operations; Transporting | 1 | Active |
| US7138012B2 | Recycled waste as air entrainment admixtures | Emerging Cross-Sectional Technologies | 0 | Expired |
| US8704019B2 | Catalyst recovery in hydrothermal treatment of biomass | Emerging Cross-Sectional Technologies | 0 | Active |
| US8962701B2 | Integrated bioprocessing for fuel production | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.