US PATENT SUBCLASS 502 / 423
.~.~.~ Adding nongaseous inorganic, or inorganic yielding component, prior to or during process

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}
423.~.~.~ Adding nongaseous inorganic, or inorganic yielding component, prior to or during process {4}
424  DF  .~.~.~.~> Zinc containing
425  DF  .~.~.~.~> Phosphorus containing
426  DF  .~.~.~.~> Acid
427  DF  .~.~.~.~> Alkali metal, alkaline earth metal, or magnesium containing

DEFINITION

Classification: 502/423

Adding nongaseous inorganic, or inorganic yielding component prior to or during process:

(under subclass 418) Process including by admixing a liquid or solid material, which is, per se, inorganic or which yields an inorganic constituent such as by decomposition, with the carbonable material before or while the latter material is being converted to carbon.