US PATENT SUBCLASS 558 / 429
.~.~.~ The ring system contains at least three cyclos

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}
428  DF  .~.~ Polycyclo alicyclic ring system containing {1}
429.~.~.~ The ring system contains at least three cyclos

DEFINITION

Classification: 558/429

(under subclass 428) Compounds wherein at least three cyclos are in the polycyclo alicyclic ring system.

(1) Note. An example of a compound provided for herein is: [figure]