US PATENT SUBCLASS 203 / 59
.~.~ Amine

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}
59.~.~ Amine

DEFINITION

Classification: 203/59

(under subclass 57) Processes in which the organic compound is an amine.

(1)

Compounds containing amino and other functional groups are classified here and cross-referenced to the other functional groups appearing below.