US PATENT SUBCLASS 560 / 146
.~.~.~.~ 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}
130  DF  .~.~.~ Esterified phenolic hydroxy {8}
146.~.~.~.~ Polycarboxylic acid

DEFINITION

Classification: 560/146

Polycarboxylic acid:

(under subclass 130) 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 be present in free acid form or it has been converted into a salt or an acid halide. Where an unesterified carboxyl has been converted into an amide, see subclass 145.

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