US PATENT SUBCLASS 208 / 155
.~.~.~ Plural zones of similar function

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

46  DF  CHEMICAL CONVERSION OF HYDROCARBONS {11}
146  DF  .~ Solids contacting and mixing {8}
153  DF  .~.~ Suspension system {7}
155.~.~.~ Plural zones of similar function {1}
156  DF  .~.~.~.~> Solids and contacting fluids are both in series

DEFINITION

Classification: 208/155

(under subclass 153) Processes which include (1) a plurality of separate unnamed mineral oil conversions (2) a plurality of separate solids regenerations or rehabilitations, or (3) a plurality of zones in which mineral oil conversions occur alternately with solids regeneration or rehabilitation.

(1) Note. Plural mineral oil conversion processes classified herein are claimed broadly as "mineral oil conversion" for example and may be disclosed as being of different type, e.g., cracking and reforming. The zones are generally associated with a common solids supply or reactant supply.

SEE OR SEARCH THIS CLASS, SUBCLASS:

49+, for processes in which a mineral oil is subjected to a plurality of successive named chemical conversion reactions (see (1) Note).

78+, for mineral oil conversion processes involving plural parallel stages of chemical conversion wherein the reactions are identified at least by name (see (1) Note).