US PATENT SUBCLASS 208 / 92
.~.~ Distillation

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

46  DF  CHEMICAL CONVERSION OF HYDROCARBONS {11}
85  DF  .~ With preliminary treatment of feed {4}
92.~.~ Distillation {2}
93  DF  .~.~.~> With blending of products of distillation with each other or with converted products
94  DF  .~.~.~> Plural stages of distillation

DEFINITION

Classification: 208/92

(under subclass 85) Processes wherein the mineral oil to be converted is subjected to distillation prior to the conversion reaction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

80, for processes including a fractionation of a feed oil preliminary to a treatment of both fraction (split feed).

347+, for processes of distilling mineral oils, wherein there is no conversion of the mineral oil.