US PATENT SUBCLASS 34 / 290
.~.~.~.~ Continuous processing

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.~.~.~.~ Continuous processing {2}
291  DF  .~.~.~.~.~> Including mixing or agitating
292  DF  .~.~.~.~.~> With gas or vapor treating (e.g., filtering or condensing)

DEFINITION

Classification: 34/290

Continuous processing:

(under subclass 289) Process including moving material to be treated into and out of a drying zone without interruption of the drying process.