US PATENT SUBCLASS 562 / 44
.~.~.~.~.~ Chalcogen or -C(=X)-, wherein X is chalcogen, in the chain

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}
41  DF  .~.~ Benzene ring attached indirectly to the sulfonate group by acyclic nonionic bonding {1}
42  DF  .~.~.~ Noncarbon atom in acyclic chain between the benzene ring and the sulfonate sulfur {1}
43  DF  .~.~.~.~ Nitrogen in the acyclic chain {1}
44.~.~.~.~.~ Chalcogen or -C(=X)-, wherein X is chalcogen, in the chain

DEFINITION

Classification: 562/44

(under subclass 43) Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium or tellurium) or -C(=X)-, wherein X is chalcogen, is also a member of the acyclic chain.

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