Stephen N. Vaughn
100Patents
19h-index
90Co-inventors
89Inventor score
Filing activity: Dec 21, 1989 → Apr 18, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6509290B1 | Catalyst composition including attrition particles and method for making same | Emerging Cross-Sectional Technologies | 75 | Expired |
| US6023005A | Process for converting oxygenates to olefins using molecular sieve catalysts comprising desirable carbonaceous deposits | Emerging Cross-Sectional Technologies | 60 | Expired |
| US5952538A | Use of short contact time in oxygenate conversion | Emerging Cross-Sectional Technologies | 57 | Expired |
| US7151199B2 | Hydrocarbon conversion processes using non-zeolitic molecular sieve catalysts | Emerging Cross-Sectional Technologies | 55 | Expired |
| US7125821B2 | Low metal content catalyst compositions and processes for making and using same | Emerging Cross-Sectional Technologies | 46 | Expired |
| US7238846B2 | Conversion process | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6316683A | Protecting catalytic activity of a SAPO molecular sieve | Emerging Cross-Sectional Technologies | 43 | Expired |
| US6503863B2 | Heat treating a molecular sieve and catalyst | Chemistry; Metallurgy | 41 | Expired |
| US6657022B2 | Inhibiting catalyst coke formation in the manufacture of an olefin | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6051746A | Oxygenate conversions using modified small pore molecular sieve catalysts | Emerging Cross-Sectional Technologies | 38 | Expired |
| US6444868B1 | Process to control conversion of C4+ and heavier stream to lighter products in oxygenate conversion reactions | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6153552A | Methods for making catalysts | Performing Operations; Transporting | 32 | Expired |
| US6710008B2 | Method of making molecular sieve catalyst | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5962762A | Use of transition metal containing small pore molecular sieve catalysts in oxygenate conversion | Chemistry; Metallurgy | 30 | Expired |
| US6395674B1 | Heat treating a molecular sieve and catalyst | Chemistry; Metallurgy | 29 | Expired |
| US6521562B1 | Preparation of molecular sieve catalysts micro-filtration | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5907076A | Process for selectively separating hydrogen, or both hydrogen and carbon monoxide from olefinic hydrocarbons | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6040264A | Use of alkaline earth metal containing small pore non-zeolitic molecular sieve catalysts in oxygenate conversion | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6441261B1 | High pressure oxygenate conversion process via diluent co-feed | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6455749B1 | Method for increasing light olefin yield by conversion of a heavy hydrocarbon fraction of a product to light olefins | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6245703A | Efficient method using liquid water to regenerate oxygenate to olefin catalysts while increasing catalyst specificity to light olefins | Chemistry; Metallurgy | 19 | Expired |
| US5336395A | Liquefaction of coal with aqueous carbon monoxide pretreatment | Chemistry; Metallurgy | 16 | Expired |
| US7309806B2 | Maintaining molecular sieve catalytic activity under water vapor conditions | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6541415B2 | Synthesis of molecular sieve catalysts | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5200063A | Coal hydroconversion process comprising solvent enhanced pretreatment with carbon monoxide | Chemistry; Metallurgy | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.