US PATENT SUBCLASS 585 / 854
.~.~.~ Elemental metal, oxide, or hydroxide

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

800  DF  PURIFICATION, SEPARATION, OR RECOVERY {7}
833  DF  .~ By addition of extraneous agent, e.g., solvent, etc. {15}
853  DF  .~.~ Alkaline metal-containing {1}
854.~.~.~ Elemental metal, oxide, or hydroxide

DEFINITION

Classification: 585/854

Elemental metal, oxide, or hydroxide:

(under subclass 853) Subject matter in which the agent is in the form of free or uncombined metal, an oxide, or a hydroxide of the metal.