US PATENT SUBCLASS 585 / 478
.~.~ With plural separation steps

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

400  DF  AROMATIC COMPOUND SYNTHESIS {15}
477  DF  .~ By isomerization {2}
478.~.~ With plural separation steps {1}
479  DF  .~.~.~> Including a crystallization step

DEFINITION

Classification: 585/478

With plural separation steps:

(under subclass 477) Subject matter in which more than one separation step is performed.

(1) Note. A separation step before isomerization combined with a separation step after isomerization is considered plural steps.

SEE OR SEARCH THIS CLASS, SUBCLASS:

804+, for an aromatic recovery process employing plural diverse serial separations.

815, for a hydrocarbon recovery process employing serial crystallization procedures.

822, for a hydrocarbon recovery process employing plural serial sorption steps.