US PATENT SUBCLASS 502 / 413
.~.~ Free carbon containing

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

400  DF  SOLID SORBENT {6}
407  DF  .~ Silicon containing {6}
413.~.~ Free carbon containing

DEFINITION

Classification: 502/413

Free carbon containing:

(under subclass 407) Composition additionally, containing carbon in elemental form.