US PATENT SUBCLASS 585 / 26
.~.~.~ Polycyclo, i.e., fused

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

16  DF  COMPOUND OR REACTION PRODUCT MIXTURE {3}
24  DF  .~ Aromatic {1}
25  DF  .~.~ Plural rings {1}
26.~.~.~ Polycyclo, i.e., fused {1}
27  DF  .~.~.~.~> Of differing carbon content or with bridge

DEFINITION

Classification: 585/26

Polycyclo, i.e., fused:

(under subclass 25) Subject matter where at least two of the rings share two adjacent carbon atoms.