David L. Fletcher
21Patents
10h-index
22Co-inventors
75Inventor score
Filing activity: Feb 16, 1979 → Mar 7, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4240149A | Measuring system | Physics | 55 | Expired |
| US5290427A | Gasoline upgrading process | Chemistry; Metallurgy | 50 | Expired |
| US5320742A | Gasoline upgrading process | Chemistry; Metallurgy | 40 | Expired |
| US5399258A | Hydrocarbon upgrading process | Chemistry; Metallurgy | 37 | Expired |
| US5346609A | Hydrocarbon upgrading process | Chemistry; Metallurgy | 22 | Expired |
| US5318690A | Gasoline upgrading process | Chemistry; Metallurgy | 19 | Expired |
| US5409596A | Hydrocarbon upgrading process | Chemistry; Metallurgy | 18 | Expired |
| US5360532A | Gasoline upgrading process | Chemistry; Metallurgy | 17 | Expired |
| US5298150A | Gasoline upgrading process | Chemistry; Metallurgy | 13 | Expired |
| USRE31774E | Measuring system | General | 12 | Expired |
| US4714646A | Electrophoretic insulation of metal circuit board core | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5352354A | Gasoline upgrading process | Chemistry; Metallurgy | 9 | Expired |
| US5391288A | Gasoline upgrading process | Chemistry; Metallurgy | 9 | Expired |
| US5326463A | Gasoline upgrading process | Chemistry; Metallurgy | 8 | Expired |
| US5413697A | Gasoline upgrading process | Chemistry; Metallurgy | 8 | Expired |
| US5308471A | Hydrocarbon upgrading process | Chemistry; Metallurgy | 6 | Expired |
| US5413696A | Gasoline upgrading process | Chemistry; Metallurgy | 6 | Expired |
| US5503734A | Hydrocarbon upgrading process | Chemistry; Metallurgy | 4 | Expired |
| US5413698A | Hydrocarbon upgrading process | Chemistry; Metallurgy | 3 | Expired |
| US9429532B2 | Method for monitoring performance of process catalysts | Chemistry; Metallurgy | 0 | Active |
| US9322793B2 | Method for monitoring performance of process catalysts | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.