US PATENT SUBCLASS 558 / 32
.~.~.~ The chalcogen, X, is part of a -C(=X)- group

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}
31  DF  .~.~ Chalcogen attached indirectly to the sulfate group by acyclic nonionic bonding {3}
32.~.~.~ The chalcogen, X, is part of a -C(=X)- group

DEFINITION

Classification: 558/32

(under subclass 31) Compounds wherein the chalcogen X is in the following group: -C(=X)-.

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