US PATENT SUBCLASS 435 / 142
.~.~.~ Polycarboxylic acid


Current as of: June, 1999
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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

41  DF  MICRO-ORGANISM, TISSUE CELL CULTURE OR ENZYME USING PROCESS TO SYNTHESIZE A DESIRED CHEMICAL COMPOUND OR COMPOSITION {26}
132  DF  .~ Preparing oxygen-containing organic compound {6}
136  DF  .~.~ Containing a carboxyl group {6}
142.~.~.~ Polycarboxylic acid {3}
143  DF  .~.~.~.~> Having keto group (e.g., alpha-ketoglutaric acid, etc.)
144  DF  .~.~.~.~> Tricarboxylic acid (e.g., citric acid, etc.)
145  DF  .~.~.~.~> Dicarboxylic acid having four or less carbon atoms (e.g., fumaric, maleic, etc.)


DEFINITION

Classification: 435/142

Polycarboxylic acid:

(under subclass 136) Processes wherein the product synthesized contains two or more carboxylic acid groups.