US PATENT SUBCLASS 502 / 433
.~.~.~.~.~ Including free oxygen

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.~.~.~.~.~ Including free oxygen {1}
434  DF  .~.~.~.~.~.~> And subsequent diverse gas

DEFINITION

Classification: 502/433

Including free oxygen:

(under subclass 432) Process in which uncombined element number 8 is recited, either diatomic or as ozone.