US PATENT SUBCLASS 201 / 23
.~ Mineral oil 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}
23.~ Mineral oil containing

DEFINITION

Classification: 201/23

(under subclass 21) Processes in which the feed contains mineral oil.

(1) Note. See Class 208, Mineral Oils: Processes and Products, "Definition of Terms," for the scope of the term "mineral oil".

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29, for a process in which an oil recovered from the carbonization step is recycled to the carbonization zone.

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48, Gas: Heating and Illuminating, 201, for a process of gasifying a mixture of coal and oil.