US PATENT SUBCLASS 558 / 46
.~.~ Plural sulfonate groups attached indirectly to each other 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}
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}
46.~.~ Plural sulfonate groups attached indirectly to each other by nonionic bonding {1}
47  DF  .~.~.~> Nitrogen attached directly or indirectly to a sulfonate group by nonionic bonding

DEFINITION

Classification: 558/46

Compounds under subclasses 44 wherein plural sulfonate groups are attached indirectly to each other by nonionic bonding.

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