US PATENT SUBCLASS 562 / 56
.~.~.~.~.~ The -C(=X)- is part of a -C(=X)X- group, wherein the X's may be the same or diverse chalcogens

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}
45  DF  .~.~ Benzene ring bonded directly to the sulfonate sulfur (e.g., purification and neutralization of benzene sulfonic acids, etc.) {11}
46  DF  .~.~.~ Having -C(=X)-, wherein X is chalcogen, attached indirectly to the sulfonate group by nonionic bonding (e.g., aldehydes, etc.) {1}
47  DF  .~.~.~.~ Chalcogen or nitrogen bonded directly to the -C(=X)- group {5}
56.~.~.~.~.~ The -C(=X)- is part of a -C(=X)X- group, wherein the X's may be the same or diverse chalcogens {1}
57  DF  .~.~.~.~.~.~> Nitrogen attached indirectly to the sulfonate group by nonionic bonding

DEFINITION

Classification: 562/56

(under subclass 47) Compounds wherein the -C(=X)- group is bonded directly to chalcogen in a -C(=X)X- group, in which the X's may be the same or diverse chalcogens.

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