US PATENT SUBCLASS 252 / 506
.~.~ With metal 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.~.~ With metal compound {3}
507  DF  .~.~.~> Titanium or zirconium compound
508  DF  .~.~.~> Aluminum compound
509  DF  .~.~.~> Magnesium, alkaline earth metal, or rare earth metal compound

DEFINITION

Classification: 252/506

(under subclass 502) Compositions which contain a metal compound not provided for above in addition to the elemental carbon.