US PATENT SUBCLASS 501 / 100
.~.~.~ And aluminum compound (e.g., clay, aluminum oxide, etc.)

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

1  DF  CERAMIC COMPOSITIONS {15}
94  DF  .~ Refractory {8}
99  DF  .~.~ Elemental carbon containing {2}
100.~.~.~ And aluminum compound (e.g., clay, aluminum oxide, etc.)

DEFINITION

Classification: 501/100

And aluminum compound (e.g., clay, aluminum oxide, etc.):

(under subclass 99) Subject matter wherein the refractory composition additionally includes a compound of aluminum.

(1) Note. The aluminum compound may comprise, e.g., clay or Al2O3.