US PATENT SUBCLASS 75 / 633
.~.~.~.~.~ Platinum(Pt)


Current as of: June, 1999
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75 /   HD   SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES

330  DF  PROCESSES {9}
392  DF  .~ Producing or treating free metal {10}
414  DF  .~.~ At 300 degrees C or greater (e.g., pyrometallurgy, etc.) {7}
585  DF  .~.~.~ Nonferrous {25}
631  DF  .~.~.~.~ Noble metal, singly or in combination {4}
633.~.~.~.~.~ Platinum(Pt)


DEFINITION

Classification: 75/633

Platinum (Pt):

(under subclass 631) Process in which Platinum (Pt) is produced or a metal that contains over 50 percent by weight Platinum is treated.