US PATENT SUBCLASS 502 / 253
.~.~.~.~ Of zinc, cadmium, or mercury

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}
232  DF  .~ Silicon containing or process of making {2}
240  DF  .~.~ With metal, metal oxide, or metal hydroxide {8}
250  DF  .~.~.~ Of Group II (i.e., alkaline earth, Be, Mg, Zn, Cd or Hg) {2}
253.~.~.~.~ Of zinc, cadmium, or mercury

DEFINITION

Classification: 502/253

Of zinc, cadmium, or mercury:

(under subclass 250) Composition which contains zinc, cadmium or mercury or the oxide or hydroxide thereof.