US PATENT SUBCLASS 208 / 284
.~.~ Alkali metal compound


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.~.~ Alkali metal compound {4}
285  DF  .~.~.~> With preliminary treatment of the oil
286  DF  .~.~.~> With subsequent treatment of the oil
287  DF  .~.~.~> With solid carrier
288  DF  .~.~.~> With added material


DEFINITION

Classification: 208/284

(under subclass 283) Processes wherein an alkali metal compound is employed.