US PATENT SUBCLASS 585 / 436
.~.~ Polycyclic product or from nonhydrocarbon feed

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

400  DF  AROMATIC COMPOUND SYNTHESIS {15}
435  DF  .~ Having alkenyl moiety, e.g., styrene, etc. {4}
436.~.~ Polycyclic product or from nonhydrocarbon feed {1}
437  DF  .~.~.~> O-containing feed

DEFINITION

Classification: 585/436

Polycyclic product or from nonhydrocarbon feed:

(under subclass 435) Subject matter wherein the product has more than one ring or contains carbon or hydrogen atoms introduced to the process as part of a compound containing atoms other than carbon and hydrogen.

(1) Note. Only one of the rings needs to be aromatic for placement in this subclass.