US PATENT SUBCLASS 502 / 223
.~.~.~ Platinum group (i.e., Ru, Rh, Pd, Os, Ir, Pt)

Current as of: June, 1999
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502 /   HD   CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR: PRODUCT OR PROCESS OF MAKING

100  DF  CATALYST OR PRECURSOR THEREFOR {12}
216  DF  .~ Sulfur or compound containing same {3}
222  DF  .~.~ And Group VIII metal containing (i.e., iron or platinum group) {1}
223.~.~.~ Platinum group (i.e., Ru, Rh, Pd, Os, Ir, Pt)

DEFINITION

Classification: 502/223

Platinum group (i.e., Ru, Rh, Pd, Os, Ir, Pt):

(under subclass 222) Composition in which the metal is element number 44, 45, 46, 76, 77, or 78.