US PATENT SUBCLASS 585 / 613
.~.~ By C content reduction, e.g., cracking, etc.

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

500  DF  UNSATURATED COMPOUND SYNTHESIS {14}
601  DF  .~ Diolefin product {4}
613.~.~ By C content reduction, e.g., cracking, etc. {2}
614  DF  .~.~.~> Isoprene product per se
615  DF  .~.~.~> Butadiene product per se

DEFINITION

Classification: 585/613

By C content reduction, e.g., cracking, etc.:

(under subclass 601) Subject matter wherein the product diolefin molecule contains fewer carbon atoms than a feedstock hydrocarbon molecule.

SEE OR SEARCH THIS CLASS, SUBCLASS:

476+, 539, 648+, and 752, for cracking processes which yield aromatic, acetylenic, monoolefinic and paraffinic hydrocarbons, respectively.