US PATENT SUBCLASS 558 / 26
.~.~.~ Additional chalcogen attached indirectly to a sulfate group by acyclic 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}
20  DF  .~ Sulfate esters ( i.e., compounds having the sulfate group, -O-S(=O)(=O)O-, bonded directly to at least one carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {11}
24  DF  .~.~ Plural sulfate groups attached indirectly to each other by nonionic bonding {2}
26.~.~.~ Additional chalcogen attached indirectly to a sulfate group by acyclic nonionic bonding

DEFINITION

Classification: 558/26

(under subclass 24) Compounds wherein one of the sulfate groups is attached indirectly to an additional chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) by acyclic nonionic bonding.

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