US PATENT SUBCLASS 560 / 154
.~.~.~.~.~ Polycarboxylic acid

Current as of: June, 1999
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560 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {17}
1  DF  .~ Carboxylic acid esters {14}
129  DF  .~.~ Acyclic acid moiety {9}
147  DF  .~.~.~ Sulfur in acid moiety {3}
152  DF  .~.~.~.~ Thio ether in acid moiety {2}
154.~.~.~.~.~ Polycarboxylic acid

DEFINITION

Classification: 560/154

Polycarboxylic acid:

(under subclass 152) Compounds wherein the acid radical contains more than one carboxyl group, at least one of which is esterified.

(1) Note. This subclass also contains compounds wherein an unesterified carboxyl may appear in the form of a free acid or has been converted into a salt or an acid halide. Where an unesterified carboxyl has been converted into an amide, see subclass 153 above.

(2) Note. This subclass contains, for example: [figure] [figure]