US PATENT SUBCLASS 502 / 430
.~.~.~ Treating with gas

Current as of: June, 1999
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502 /   HD   CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR: PRODUCT OR PROCESS OF MAKING

400  DF  SOLID SORBENT {6}
416  DF  .~ Free carbon containing {3}
418  DF  .~.~ Process utilizing solid or liquid source carbonizable material, or product thereof {9}
430.~.~.~ Treating with gas {2}
431  DF  .~.~.~.~> Fluidized bed having specified parameter
432  DF  .~.~.~.~> Specified atmosphere {2}

DEFINITION

Classification: 502/430

Treating with gas:

(under subclass 418) Process in which the material is contacted with a specified fluid above its fluid boiling point at the conditions of the treatment.