US PATENT SUBCLASS 34 / 311
.~.~ Shielding by use of physical barrier to treating gas or vapor

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

282  DF  PROCESS {24}
307  DF  .~ Retarding or shielding of treatment {4}
311.~.~ Shielding by use of physical barrier to treating gas or vapor

DEFINITION

Classification: 34/311

Shielding by use of physical barrier to treating gas or vapor:

(under subclass 307) Process wherein a buffer not attached to the material treated is associated with the material and arranged to provide differential gas or vapor contact on successive areas of the material treated.