Inventor

VAUGHN STEPHEN N

US83 patents

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

VAUGHN STEPHEN N

EXXONMOBIL CHEM PATENTS INC

Protecting catalytic activity of a SAPO molecular sieve

Inhibiting catalyst coke formation in the manufacture of an olefin

Heat treating a molecular sieve and catalyst

High pressure oxygenate conversion process via diluent co-feed

Making an olefin product from an oxygenate

Conversion process

Hydrocarbon conversion processes using non-zeolitic molecular sieve catalysts

Synthesis of molecular sieve catalysts

Conversion process

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

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

Method for converting oxygenates to olefins

Protecting catalytic activity of a SAPO molecular sieve

Method for converting oxygenates to olefins

Method of making molecular sieve catalyst

Process for making olefins

Method for improving light olefin selectivity in an oxygenate conversion reaction

Methods of removing halogen from non-zeolitic molecular sieve catalysts

Preparation of molecular sieve catalysts micro-filtration

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

Molecular sieve compositions, catalyst thereof, their making and use in conversion processes

Method and system for reducing decomposition byproducts in a methanol to olefin reactor system

Catalytic production of olefins at high methanol partial pressures

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

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

Catalyst testing apparatus and process

Molecular sieve compositions, catalyst thereof, their making and use in conversion processes

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

Attrition resistant molecular sieve catalysts

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

Protecting catalytic activity of a SAPO molecular sieve

Conversion process

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

Method and apparatus for reducing decomposition byproducts in a methanol to olefin reactor system

Process to control conversion of C4+ and heavier stream to lighter products in oxygenate conversion reactions

Making an olefin product from an oxygenate

Stripping hydrocarbon in an oxygenate conversion process

Maintaining acid catalyst sites in SAPO molecular sieves

Method of making and process for using molecular sieve catalyst

Method for converting an oxygenate feed to a light olefin

EXXON MOBIL CHEM PATENTS INC

Catalyst composition including attrition particles and method for making same

Process to control conversion of C4+ and heavier stream to lighter products in oxygenate conversion reactions

Efficient method using liquid water to regenerate oxygenate to olefin catalysts while increasing catalyst specificity to light olefins

Heat treating a molecular sieve and catalyst

Maintaining acid catalyst sites in sapo molecular sieves

EXXON RESEARCH ENGINEERING CO

Liquefaction of coal with aqueous carbon monoxide pretreatment

Conversion of coal with promoted carbon monoxide pretreatment

Coal hydroconversion process comprising solvent enhanced pretreatment with carbon monoxide

Aquathermolytic cleavage of ethers

EXXON CHEMICAL PATENTS INC

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