US PATENT SUBCLASS 202 / 169
.~.~.~.~.~ Continuous extraction

Current as of: June, 1999
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202 /   HD   DISTILLATION: APPARATUS

81  DF  APPARATUS {4}
82  DF  .~ Systems {6}
152  DF  .~.~ Separatory {3}
163  DF  .~.~.~ Still {13}
168  DF  .~.~.~.~ Still and extractor {1}
169.~.~.~.~.~ Continuous extraction

DEFINITION

Classification: 202/169

(under subclass 168) Apparatus coming for continuously extracting and distilling. A condenser frequently returns its condensate upon the material within the extractor at short

intervals, which condensate is a solvent of the material to be extracted, and passes it through to the still. Final separation of the solvent and volatile is usually in the same still assembly.