Inventor

ROBERTS JOHN S

US54 patents

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

ROBERTS JOHN S

PHILLIPS PETROLEUM CO

Production of mercapto compounds

Method for the oxidation of mercaptoalkanols to dithiodiglycols

Process for reducing possibility of leaching of heavy metals from used petroleum cracking catalyst in land fills

Method of transferring a passivating agent to or from a cracking catalyst

Continuous process for the production of disulfides

Process for producing a catalyst

Purification of high boiling alkyl sulfides

Cracking catalyst improvement with gallium compounds

Catalyst poisons passivated with tin compounds plus both sulfur and phosphorus

Cracking catalyst improvement with gallium compounds

Cracking catalyst poisons passivated with tin compounds plus both sulfur and phosphorus

Cracking process and catalyst for same containing indium to passivate contaminating metals

Regenerating zeolitic cracking catalyst

Regenerating zeolitic cracking catalyst

Passivating metals on cracking catalysts

Process for preparing organothioalkanols

Sulfide metathesis

Stable antimony organophosphorodithioates

Cracking process and catalyst for same

Regenerating zeolitic cracking catalyst

Oxa-organic sulfur compounds, their preparation and use

Passivating metals on cracking catalysts

Preparation of isethionic acid with organic acid

Dodecyl hydroxymethyl sulfide

Oxa-organic sulfur compounds, their preparation and use

Process for preparing stable organic hydroxysulfide compositions

Oxa-organic sulfur compounds, their preparation and use

Catalyst composition

KLING TECS INC

Melt spinning process

Method of extruding polypropylene yarn

Method of extruding polypropylene yarn

Apparatus for extruding yarn

Method of extruding polypropylene yarn

Method for crimping yarn

Compression crimping apparatus

Apparatus for crimping yarn

Method of extruding polypropylene yarn

Melt spinning solution dyed filaments and improved spin pack therefor

Compression crimping apparatus

J I T TECHNOLOGIES INC

Apparatus and process for variable image printing on tape

Apparatus for variable image printing on tape

Label tamp

WESTINGHOUSE ELECTRIC CORP

Low forward voltage drop thyristor

Method of making a light activated semiconductor controlled rectifier

Low forward voltage drop thyristor

ROBERTS JOHN S

Cigar-shaped letter opener with cover

Compression crimping apparatus

ICI PLC

Temporary protective aqueous coating compositions

PHILIPS CORP

Method of growing a doped III-V alloy layer by molecular beam epitaxy utilizing a supplemental molecular beam of lead

CONCORDE FIBERS

Method of applying liquid finish composition to filaments