US PATENT SUBCLASS 558 / 49
.~.~.~ The nitrogen is bonded directly to -C(=X)-, wherein X is chalcogen

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}
44  DF  .~ Sulfonate esters (i.e., compounds having the sulfonate group, -O-S(=O)(=O) , wherein the single bonded oxygen is bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {7}
48  DF  .~.~ Nitrogen attached directly or indirectly to the sulfonate group by acyclic nonionic bonding {1}
49.~.~.~ The nitrogen is bonded directly to -C(=X)-, wherein X is chalcogen {1}
50  DF  .~.~.~.~> Additional nitrogen attached directly or indirectly to the -C(=X)- group by acyclic nonionic bonding

DEFINITION

Classification: 558/49

(under subclass 40) Compounds in which the nitrogen is bonded directly to -C(=X)-, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

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