US PATENT SUBCLASS 201 / 22
.~ Char containing

Current as of: June, 1999
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201 /   HD   DISTILLATION: PROCESSES, THERMOLYTIC

21  DF  FEED OF TWO OR MORE CARBONACEOUS MATERIAL (AT LEAST THE PREDOMINATE ONE BEING SOLID) {3}
22.~ Char containing

DEFINITION

Classification: 201/22

(under subclass 21) Processes in which a component of the feed is char.

SEE OR SEARCH THIS CLASS, SUBCLASS:

28+, for processes in which a char product is recycled to the carbonizing operation.