US PATENT SUBCLASS 585 / 851
.~.~ Group III nontransition element-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}
851.~.~ Group III nontransition element-containing {1}
852  DF  .~.~.~> Al

DEFINITION

Classification: 585/851

Group III nontransition element-containing:

(under subclass 833) Subject matter wherein an extraneous agent contains boron, aluminum, gallium, indium, or thallium or a compound thereof.