Inventor

SHERK FRED T

US25 patents

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

SHERK FRED T

PHILLIPS PETROLEUM CO

Separation of solid polymers and liquid diluent

Loop reactor settling leg system for separation of solid polymers and liquid diluent

Monomer and diluent recovery

Diluent and inert gas recovery from a polymerization process

Solvent extraction of tar sand

Polyolefin reactor system

Recovering poly(arylene sulfide) oligomers from a poly(arylene sulfide) reaction mixture

Production of arylene sulfide polymer beads

Method and apparatus for the selective absorption of gases

Elevated, declining pressure dehydration of poly(arylene sulfide) prepolymerization mixture

Acid wash of polyarylene sulfides

Hydrocarbon treating process

Continuous process for the production of alkali metal n-methylaminobutyrate

Process for producing alkali metal salts of aromatic polycarboxylic acids

Granular poly(arylene sulfide) recovery using evaporation

Butadiene recovery

Empty-full indicator for solids tanks and blenders

Hydrocarbon wash liquid for catalyst separation

Arylene sulfide polymer purification

Solid state curing of poly(arylene sulfide) resins in reduced oxygen atmospheres

Acetylenes removal from olefin streams for alkylation by dimethyl formamide absorption

Method of removing acetylene and sulfur compounds from gases by absorption in dimethyl formamide

Washing arylene sulfide polymers with water plus a reducing agent

Removing carbonaceous contaminant from zinc oxide

CLEARY JAMES W

Purification of N-methylpyrrolidone