US PATENT SUBCLASS 558 / 196
.~.~.~ The chalcogen is part of a -S(=O)- or a -S(=O)(=O)- group (e.g., sulfoxides, sulfonic acids, etc.)

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}
70  DF  .~ Phosphorus esters (i.e., compounds having the phosphorus ester group, wherein trivalent or pentavalent phosphorus and carbon are bonded directly to the same divalent chalcogen, and wherein the carbon may be single bonded to any atom but may be multiple bonded only to carbon) {18}
194  DF  .~.~ Chalcogen attached indirectly to the phosphorus by nonionic bonding {4}
196.~.~.~ The chalcogen is part of a -S(=O)- or a -S(=O)(=O)- group (e.g., sulfoxides, sulfonic acids, etc.)

DEFINITION

Classification: 558/196

(under subclass 194) Compounds in which the chalcogen is part of a -S(=O)- or of a -S(=OO)- or of a -S(=O) (O=) group.

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