US PATENT SUBCLASS 203 / 76
.~.~.~ Including the addition of water or steam

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


203 /   HD   DISTILLATION: PROCESSES, SEPARATORY

71  DF  PLURAL DISTILLATIONS PERFORMED ON SAME MATERIAL {5}
73  DF  .~ One a distillation under positive pressure or vacuum {4}
74  DF  .~.~ Distillation of initial distillate {3}
76.~.~.~ Including the addition of water or steam

DEFINITION

Classification: 203/76

(under subclass 74) Processes, directed to adding water or steam to at least one distillation operation.

(1) Note. Water or steam is usually added to the distillation operation to change the relative volatility of the components of the material being distilled.