US PATENT SUBCLASS 203 / 54
.~.~.~ A second material is aldehyde or ketone

Current as of: June, 1999
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203 /   HD   DISTILLATION: PROCESSES, SEPARATORY

50  DF  ADDING MATERIAL TO DISTILLAND EXCEPT WATER OR STEAM PER SE {2}
51  DF  .~ At least two materials {3}
53  DF  .~.~ One material is water {2}
54.~.~.~ A second material is aldehyde or ketone

DEFINITION

Classification: 203/54

(under subclass 53) Processes in which another substance comprises an aldehyde or a ketone.