US PATENT SUBCLASS 562 / 54
.~.~.~.~.~.~ Plural -C(=X)- groups bonded directly to the same benzene ring


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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}
52  DF  .~.~.~.~.~ Plural -C(=X)- groups attached indirectly to the sulfonate group by nonionic bonding {2}
54.~.~.~.~.~.~ Plural -C(=X)- groups bonded directly to the same benzene ring


DEFINITION

Classification: 562/54

(under subclass 52) Compounds wherein a benzene ring is bonded directly to more than one -C(=X)- group.

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