US PATENT SUBCLASS 501 / 119
.~.~.~.~ Aluminum compound other than clay

Current as of: June, 1999
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501 /   HD   COMPOSITIONS: CERAMIC

1  DF  CERAMIC COMPOSITIONS {15}
94  DF  .~ Refractory {8}
108  DF  .~.~ Magnesium compound containing {7}
118  DF  .~.~.~ And aluminum compound {1}
119.~.~.~.~ Aluminum compound other than clay {1}
120  DF  .~.~.~.~.~> Spinel or other aluminate

DEFINITION

Classification: 501/119

Aluminum compound other than clay:

(under subclass 118) Subject matter wherein the aluminum compound is other than clay.

(1) Note. The aluminum compound may be, for example, aluminum oxide, or chloride.