US PATENT SUBCLASS 208 / 334
.~.~.~.~ Ethers

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

308  DF  FRACTIONATION {5}
311  DF  .~ Liquid extraction with solvents {11}
322  DF  .~.~ Organic solvent containing {8}
333  DF  .~.~.~ Oxy compound {2}
334.~.~.~.~ Ethers

DEFINITION

Classification: 208/334

(under subclass 333) Processes wherein the oxy compound is an ether.