US PATENT SUBCLASS 585 / 648
.~ 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}
648.~ By C content reduction, e.g., cracking, etc. {3}
649  DF  .~.~> Isobutylene product per se
650  DF  .~.~> Ethylene product per se {2}
653  DF  .~.~> Using catalyst

DEFINITION

Classification: 585/648

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

(under subclass 500) Subject matter wherein the feed to the reaction contains more carbon atoms in its molecule than the product contains.

SEE OR SEARCH THIS CLASS, SUBCLASS:

439, and 476, for cracking processes which produce an aromatic product.

500, for cracking processes which produce a triple-bond product.

752, for cracking processes which produce a paraffin product.