US PATENT SUBCLASS 424 / 691
.~.~.~ Aluminum oxide

Current as of: June, 1999
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424 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

600  DF  INORGANIC ACTIVE INGREDIENT CONTAINING {20}
682  DF  .~ Aluminum, calcium or magnesium element, or compound containing {7}
688  DF  .~.~ Oxide or hydroxide {6}
691.~.~.~ Aluminum oxide

DEFINITION

Classification: 424/691

Aluminum oxide:

(under subclass 688) Compositions which contain aluminum oxide.

(1) Note. Synonyms/Examples. Alumina, alpha-corundum.