US PATENT SUBCLASS 252 / 301.6 F
.~.~ Group IV element containing

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

301.4 R  DF  INORGANIC LUMINESCENT COMPOSITIONS {6}
301.6 R  DF  .~ Zinc or cadmium containing {3}
301.6 F.~.~ Group IV element containing

Unofficial Alpha Subclasses: R S P F

DEFINITION

Classification: 252/301.6

(under subclass 301.4) Compositions which contain zinc or cadmium in combined or elemental form.