US PATENT SUBCLASS 502 / 434
.~.~.~.~.~.~ And subsequent diverse 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  DF  .~.~.~ Treating with gas {2}
432  DF  .~.~.~.~ Specified atmosphere {2}
433  DF  .~.~.~.~.~ Including free oxygen {1}
434.~.~.~.~.~.~ And subsequent diverse gas

DEFINITION

Classification: 502/434

And subsequent diverse gas:

(under subclass 433) Process in which after treatment with the oxygen containing gas, the carbon source material is contacted with a different gas, which may also contain oxygen.

(1) Note. The treatment with diverse gas may be in the same or a different zone and may employ the same constituents in a different mixture - i.e., other percentages or ingredients.