US PATENT SUBCLASS 34 / 410
.~.~.~ Treating agent is inert gas

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

282  DF  PROCESS {24}
406  DF  .~ Gas or vapor pressure is subatmospheric {3}
409  DF  .~.~ Including addition of treating agent {2}
410.~.~.~ Treating agent is inert gas

DEFINITION

Classification: 34/410

Treating agent is inert gas:

(under subclass 409) Process wherein the treating agent used is a chemically nonreactive gas such as nitrogen, argon, helium, etc.