US PATENT SUBCLASS 502 / 311
.~.~.~ And Group V metal containing (i.e., V, Nb, Ta, As, Sb or Bi)

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}
300  DF  .~ Metal, metal oxide or metal hydroxide {10}
305  DF  .~.~ Of Group VI (i.e., Cr, Mo, W or Po) {8}
311.~.~.~ And Group V metal containing (i.e., V, Nb, Ta, As, Sb or Bi) {1}
312  DF  .~.~.~.~> Vanadium containing

DEFINITION

Classification: 502/311

And Group V metal containing (i.e., V, Nb, Ta, As, Sb or Bi):

(under subclass 305) Composition which additionally includes one of V, Nb, Ta, As, Sb, or Bi.