US PATENT SUBCLASS 558 / 427
.~.~.~ Polycyclo ring system having at least three cyclos, at least one of which is a benzene ring

Current as of: June, 1999
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558 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
303  DF  .~ Nitriles (i.e., compounds having cyano bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {21}
426  DF  .~.~ Benzene ring attached indirectly to the cyano group by nonionic bonding (i.e., alicyclic ring between the benzene ring and the cyano group) {1}
427.~.~.~ Polycyclo ring system having at least three cyclos, at least one of which is a benzene ring

DEFINITION

Classification: 558/427

(under subclass 426) Compounds which contain a polycyclo ring system having at least three cyclos, and at least one of the cyclos of the system is a benzene ring.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]