US PATENT SUBCLASS 252 / 508
.~.~.~ Aluminum compound

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

500  DF  ELECTRICALLY CONDUCTIVE OR EMISSIVE COMPOSITIONS {6}
502  DF  .~ Elemental carbon containing {5}
506  DF  .~.~ With metal compound {3}
508.~.~.~ Aluminum compound

DEFINITION

Classification: 252/508

(under subclass 506) Compositions which contain an aluminum compound in addition to the elemental carbon.