US PATENT SUBCLASS 562 / 39
.~.~.~ Processes of forming the -NH-S(=O)(O=)-O- group, wherein substitution may be made for hydrogen only

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562 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
30  DF  .~ Sulfonic acids or salts thereof (i.e., compounds containing the sulfonate group, -S(=O)(=O)-O- wherein the single bonded oxygen is bonded directly to hydrogen, or to a group IA or IIA light metal or to substituted or unsubstituted ammonium) {15}
37  DF  .~.~ Nitrogen attached directly to the sulfonate sulfur by nonionic bonding (e.g., sulfamic acids, etc.) {3}
39.~.~.~ Processes of forming the -NH-S(=O)(O=)-O- group, wherein substitution may be made for hydrogen only

DEFINITION

Classification: 562/39

(under subclass 37) Processes which involve the formation of the following group, wherein substitution may be made for hydrogen only: [figure]