Inventor

VAUGHN STEPHEN NEIL

US25 patents

⚠️ This page may combine multiple inventors who share the name “VAUGHN STEPHEN NEIL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

VAUGHN STEPHEN NEIL

EXXONMOBIL CHEM PATENTS INC

Low metal content catalyst compositions and processes for making and using same

Maintaining molecular sieve catalytic activity under water vapor conditions

Selectively removing undesirably sized catalyst particles from a reaction system

Method for increasing light olefin yield by conversion of a heavy hydrocarbon fraction of a product to light olefins

Method for increasing light olefin yield by conversion of a heavy hydrocarbon fraction of a product to light olefins

Low metal content catalyst compositions and processes for making and using same

Reducing temperature differences within the regenerator of an oxygenate to olefin process

Maintaining molecular sieve catalytic activity under water vapor conditions

Crystalline intergrowth material, its synthesis and its use in the conversion of oxygenates to olefins

Method of shutting down a reaction system

Increasing ethylene and/or propylene production in an oxygenate to olefins reaction systems

Molecular sieve catalyst composition, its making and use in conversion processes

Molecular sieve catalyst composition, its making and use in conversion processes

Method of starting up a reaction system

Method of protecting SAPO molecular sieve from loss of catalytic activity

Fines co-feed for maintaining efficient reactor hydrodynamics

Crystalline intergrowth material of silicoaluminophosphate having two intergrown phases

Stabilizing catalyst activity during catalyst regeneration

EXXON CHEMICAL PATENTS INC

Process for converting oxygenates to olefins using molecular sieve catalysts comprising desirable carbonaceous deposits

Oxygenate conversions using modified small pore molecular sieve catalysts

Use of alkaline earth metal containing small pore non-zeolitic molecular sieve catalysts in oxygenate conversion

Methods for making catalysts

Use of short contact time in oxygenate conversion

Process for selectively separating hydrogen, or both hydrogen and carbon monoxide from olefinic hydrocarbons

(unassigned)

Use of transition metal containing small pore molecular sieve catalysts in oxygenate conversion