US PATENT SUBCLASS 585 / 809
.~.~ To recover unsaturate

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

800  DF  PURIFICATION, SEPARATION, OR RECOVERY {7}
802  DF  .~ By plural serial diverse separations {3}
809.~.~ To recover unsaturate {2}
810  DF  .~.~.~> Diolefin
811  DF  .~.~.~> Including treatment with S-containing agent

DEFINITION

Classification: 585/809

To Recover Unsaturate:

(under subclass 802) Subject matter wherein an unsaturated hydrocarbon, e.g., an olefin, an alkyene, etc., is purified or separated out from a mixture.