US PATENT SUBCLASS 502 / 215
.~ Selenium or tellurium or compound containing same

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}
215.~ Selenium or tellurium or compound containing same

DEFINITION

Classification: 502/215

Selenium or tellurium or compound containing same:

(under subclass 100) Composition including either element 34 or 52, free or chemically combined.