US PATENT SUBCLASS 252 / 512
.~ Free metal containing

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

500  DF  ELECTRICALLY CONDUCTIVE OR EMISSIVE COMPOSITIONS {6}
512.~ Free metal containing {3}
513  DF  .~.~> Iron group metal (iron, cobalt, nickel)
514  DF  .~.~> Noble metal (gold, silver, ruthenium, rhodium, palladium, osmium, iridium, platinum)
515  DF  .~.~> Tungsten

DEFINITION

Classification: 252/512

(under subclass 500) Compositions which contain free metals.

SEE OR SEARCH THIS CLASS, SUBCLASS:

503, for conductive or emissive compositions containing free metal and elemental carbon.