US PATENT SUBCLASS 502 / 518
.~ Carbonaceous contaminant

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

515  DF  SPECIFIC CONTAMINANT REMOVAL {3}
518.~ Carbonaceous contaminant

DEFINITION

Classification: 502/518

Carbonaceous contaminant:

(under subclass 515) Collection of art in which the material removed comprises a substantial amount of element number 6 in relatively free state, or partially oxidized organic material known as char.