US PATENT SUBCLASS 562 / 102
.~.~.~ Nitrogen or -C(=X)-, wherein X is chalcogen, attached indirectly to the sulfonate groups by nonionic bonding

Current as of: June, 1999
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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}
101  DF  .~.~ Plural sulfonate groups attached indirectly to each other by acyclic nonionic bonding {2}
102.~.~.~ Nitrogen or -C(=X)-, wherein X is chalcogen, attached indirectly to the sulfonate groups by nonionic bonding

DEFINITION

Classification: 562/102

(under subclass 101) Compounds wherein the sulfonate groups are attached indirectly to nitrogen or to -C(=X)-, wherein X is chalcogen (i.e., oxygen, sulfur, selenium or tellurium), by nonionic bonding.

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