US PATENT SUBCLASS 208 / 407
.~ Specified agitation or circulation in gas contact zone

Current as of: June, 1999
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208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

400  DF  BY TREATMENT OF SOLID MINERAL, E.G., COAL LIQUEFACTION, ETC. {13}
407.~ Specified agitation or circulation in gas contact zone {3}
408  DF  .~.~> Gas includes hydrogen
409  DF  .~.~> Vertical gas upflow, e.g., fluidization, etc. {1}
411  DF  .~.~> Using solid heat carrier

DEFINITION

Classification: 208/407

Specified agitation or circulation in gas contact zone:

(under subclass 400) Subject matter including a step o contaction a solid or liquid with a gas, wherein the circulation pattern of the solid or liquid during the gas contacting, e.g., countercurrent flow, etc., is claimed or in which the solid or liquid moves in a particular way, e.g., horizontally, etc., while being contacted.

(1) Note. A claim that the contact takes place in a contact apparatus having a particular orientation, for example, a "horizontal contactor" usually is enough for placement in this subclass.