US PATENT SUBCLASS 95 / 47
.~.~ Nitrogen or nitrogen containing compound permeates barrier

Current as of: June, 1999
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95 /   HD   GAS SEPARATION: PROCESSES

43  DF  SELECTIVE DIFFUSION OF GASES {2}
45  DF  .~ Selective diffusion of gases through substantially solid barrier (e.g., semipermeable membrane, etc.) {10}
47.~.~ Nitrogen or nitrogen containing compound permeates barrier

DEFINITION

Classification: 95/47

Nitrogen or nitrogen containing compound permeates barrier:

(under subclass 45) Process in which nitrogen (N2) or a nitrogen containing compound selectively diffuses through a substantially solid barrier.