US PATENT SUBCLASS 558 / 404
.~.~.~ Having -C(=X)-, wherein X is chalcogen, 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}
388  DF  .~.~ Benzene ring attached indirectly to the cyano group by acyclic nonionic bonding {5}
404.~.~.~ Having -C(=X)-, wherein X is chalcogen, attached indirectly to the cyano group by nonionic bonding {2}
405  DF  .~.~.~.~> Two carbons bonded directly to the carbon of the -C(=X)- group (e.g., ketones, etc.)
406  DF  .~.~.~.~> Oxygen bonded directly to carbonyl (e.g., carboxylic acid esters, etc.) {1}

DEFINITION

Classification: 558/404

(under subclass 388) Compounds wherein the cyano group is attached ndirectly to -C(=X)- by nonionic bonding, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

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

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