US PATENT SUBCLASS 208 / 288
.~.~.~ With added material

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

177  DF  REFINING {23}
283  DF  .~ With alkali or alkali earth metal compound (except clays) {1}
284  DF  .~.~ Alkali metal compound {4}
288.~.~.~ With added material

DEFINITION

Classification: 208/288

(under subclass 284) Processes in which an added material, other than water, is combined with the alkali metal compound.