US PATENT SUBCLASS 585 / 855
.~.~ Metal-containing

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}
855.~.~ Metal-containing

DEFINITION

Classification: 585/855

Metal-containing:

(under subclass 833) Subject matter wherein an agent contains metal in free or combined form.

(1) Note. Metals appropriate for placing patents in this subclass include transition metals of periodic table groups IIB, IIIB, IVB, VB, and VIB, germanium, gold, tin, lead, arsenic, antimony, and bismuth.