John Freel
5Patents
5h-index
7Co-inventors
56Inventor score
Filing activity: Feb 11, 1980 → May 23, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4303127A | Multistage clean-up of product gas from underground coal gasification | Emerging Cross-Sectional Technologies | 83 | Expired |
| US6383236B1 | Low emission, non-oxygenated fuel composition | Chemistry; Metallurgy | 14 | Expired |
| US6132479A | Low emission, non-oxygenated fuel composition | Chemistry; Metallurgy | 9 | Expired |
| US4280881A | Separating indene from unsaturated alkylaromatics | Chemistry; Metallurgy | 9 | Expired |
| US4371428A | Separating vinyltoluene from other alkenylaromatics | Chemistry; Metallurgy | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.