US PATENT SUBCLASS 208 / 86
.~.~ Deasphalting

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}
86.~.~ Deasphalting

DEFINITION

Classification: 208/86

(under subclass 85) Processes wherein the mineral oil feed is subjected to a treatment to remove asphaltic components therefrom prior to the conversion stage.

SEE OR SEARCH THIS CLASS, SUBCLASS:

39+, for the separation or recovery asphalt as a product.

308, for deasphalting treatments, per se.