US PATENT SUBCLASS 558 / 436
.~.~.~ Sulfur attached indirectly to the cyano group by nonionic bonding

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}
435  DF  .~.~ Acyclic (e.g., purification of saturated nitriles, etc.) {9}
436.~.~.~ Sulfur attached indirectly to the cyano group by nonionic bonding {2}
437  DF  .~.~.~.~> The sulfur is double bonded to oxygen
438  DF  .~.~.~.~> Two carbons bonded directly to the same divalent sulfur {1}

DEFINITION

Classification: 558/436

(under subclass 435) Compounds wherein the cyano group is attached in directly to sulfur by nonionic bonding.

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