US PATENT SUBCLASS 210 / 500.39
.~.~.~.~.~.~ Imide


Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

348  DF  FILTER {25}
500.1  DF  .~ Material {6}
500.21  DF  .~.~ Semipermeable membrane {6}
500.27  DF  .~.~.~ Organic {7}
500.37  DF  .~.~.~.~ Amine {1}
500.38  DF  .~.~.~.~.~ Amide {1}
500.39.~.~.~.~.~.~ Imide


DEFINITION

Classification: 210/500.39

Imide:

(under subclass 500.38) Subject matter including the group: R-C-N-C-R.