US PATENT SUBCLASS 208 / 98
.~.~.~ With acids

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

46  DF  CHEMICAL CONVERSION OF HYDROCARBONS {11}
95  DF  .~ With subsequent treatment of products {3}
97  DF  .~.~ Refining {2}
98.~.~.~ With acids

DEFINITION

Classification: 208/98

(under subclass 97) Processes wherein the refining treatment includes the use of an acid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

219+, 252, 256, and 265+, for refining processes wherein an acid is used.