US PATENT SUBCLASS 210 / 500.37
.~.~.~.~ Amine

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.~.~.~.~ Amine {1}
500.38  DF  .~.~.~.~.~> Amide {1}

DEFINITION

Classification: 210/500.37

Amine:

(under subclass 500.27) Subject matter comprising an atom of carbon bonded to an atom of nitrogen, which structures are the equivalent of a structure formed from ammonia (NH3) by replacement of one, two, or three of the hydrogens with carbon atoms.