US PATENT SUBCLASS 585 / 23
.~.~ Unsaturated ring

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

16  DF  COMPOUND OR REACTION PRODUCT MIXTURE {3}
20  DF  .~ Alicyclic {2}
23.~.~ Unsaturated ring

DEFINITION

Classification: 585/23

Unsaturated ring:

(under subclass 20) Subject matter containing a ring which has olefinic unsaturation.