US PATENT SUBCLASS 34 / 435
.~.~ Gas or vapor flow concurrent or countercurrent to treated material flow

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

282  DF  PROCESS {24}
428  DF  .~ Cooling by gas or vapor contact {4}
435.~.~ Gas or vapor flow concurrent or countercurrent to treated material flow {1}
436  DF  .~.~.~> Gravity flow of treated material

DEFINITION

Classification: 34/435

Gas or vapor flow concurrent or countercurrent to treated material flow:

(under subclass 428) Process wherein the treating gas or vapor is directed in a parallel path flowing in the same direction as the treated material, or is directed in a parallel path flowing in the opposite direction of the treated material.