US PATENT SUBCLASS 562 / 72
.~.~.~.~.~ Halogen, plural nitrogens, or additional sulfonate group bonded directly to the polycyclo ring system

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}
58  DF  .~.~.~ Nitrogen attached indirectly to the sulfonate group by nonionic bonding {7}
68  DF  .~.~.~.~ Polycyclo ring system consisting of benzene rings bonded directly to the sulfonate group {3}
72.~.~.~.~.~ Halogen, plural nitrogens, or additional sulfonate group bonded directly to the polycyclo ring system

DEFINITION

Classification: 562/72

(under subclass 68) Compounds wherein the polycyclo ring system is bonded directly to halogen, to plural nitrogens, or to plural sulfonate groups.

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