US PATENT SUBCLASS 34 / 292
.~.~.~.~.~ With gas or vapor treating (e.g., filtering or condensing)

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

282  DF  PROCESS {24}
284  DF  .~ Freeze-drying {3}
287  DF  .~.~ Including vacuum {2}
289  DF  .~.~.~ And heating {6}
290  DF  .~.~.~.~ Continuous processing {2}
292.~.~.~.~.~ With gas or vapor treating (e.g., filtering or condensing)

DEFINITION

Classification: 34/292

With gas or vapor treating (e.g., filtering or condensing):

(under subclass 290) Process combined with adding any character of material to or removing any character of material from the gas or vapor derived from the freeze-drying process.

(1) Note. This process could involve filtering, condensation, moisturizing, etc. of the derived gas or vapor.