US PATENT SUBCLASS 202 / 198
.~.~.~.~.~ Dephlegmator

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}
182  DF  .~.~.~.~ With vapor-treating devices {7}
198.~.~.~.~.~ Dephlegmator

DEFINITION

Classification: 202/198

The vapors from the column or still pass through a condenser in which the higher-boiling fractions are condensed and returned directly to the column or still.

SEE OR SEARCH CLASS

196, Mineral Oils: Apparatus,

139,.