US PATENT SUBCLASS 435 / 144
.~.~.~.~ Tricarboxylic acid (e.g., citric acid, etc.)

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  DF  .~.~.~ Polycarboxylic acid {3}
144.~.~.~.~ Tricarboxylic acid (e.g., citric acid, etc.)

DEFINITION

Classification: 435/144

Tricarboxylic acid (e.g., citric acid, etc.):

(under subclass 142) Processes wherein the product synthesized contains three carboxylic acid groups.