US PATENT SUBCLASS 203 / 62
.~.~ 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}
57  DF  .~ Organic compound {8}
62.~.~ Aldehyde or ketone

DEFINITION

Classification: 203/62

(under subclass 57) Processes in which the organic compound is an aldehyde or a ketone.

SEE OR SEARCH THIS CLASS, SUBCLASS:

17, for the meaning of "aldehyde" and "ketone".