US PATENT SUBCLASS 507 / 260
.~.~ Organic component is polycarboxylic acid, ester, or salt thereof

Current as of: June, 1999
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507 /   HD   EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

200  DF  WELL TREATING {4}
203  DF  .~ Contains organic component {17}
260.~.~ Organic component is polycarboxylic acid, ester, or salt thereof

DEFINITION

Classification: 507/260

Organic component is polycarboxylic acid, ester, or salt thereof:

(under subclass 203) Compositions wherein the organic component is a polycarboxylic acid, a polycarboxylic acid ester, or a salt thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

241, for EDTA, NTA, and other polycarboxyl compounds containing nitrogen.