US PATENT SUBCLASS 432 / 14
.~ Including passing, treating or conveying gas into or through particulate work

Current as of: June, 1999
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432 /   HD   HEATING

1  DF  PROCESSES OF HEATING OR HEATER OPERATION {14}
14.~ Including passing, treating or conveying gas into or through particulate work {3}
15  DF  .~.~> Including maintenance of fluidized bed
16  DF  .~.~> Including a dust control or particle separation step
17  DF  .~.~> Including modulation of flow rate of gas or treated material

DEFINITION

Classification: 432/14

(under subclass 1) Process including a step in which a temperature modifying gas traverses a mass or stream of particulate work.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids,

443+, for a process of drying involving gas or vapor contact with the material being dried.