David Spence
3Patents
3h-index
4Co-inventors
47Inventor score
Filing activity: May 7, 1985 → Mar 25, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4558168A | Production of high purity butene-1 from an n-butane feedstock | Chemistry; Metallurgy | 23 | Expired |
| US8258357B2 | Production of propylene from butane | Emerging Cross-Sectional Technologies | 4 | Active |
| US4560824A | Heat balance control in catalytic dehydrogenation of isobutane | Chemistry; Metallurgy | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.