US PATENT SUBCLASS 558 / 304
.~.~ With preservative or stabilizer

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}
304.~.~ With preservative or stabilizer {1}
305  DF  .~.~.~> Acyclic or alicyclic carbon to carbon unsaturation in the preserved or stabilized nitrile {2}

DEFINITION

Classification: 558/304

(under subclass 303) Products which contain a nitrile in admixture with a preservative or stabilizing ageent whose sole function is to prevent physical or chemical change.