US PATENT SUBCLASS 208 / 328
.~.~.~ Nonoxo carbonylic

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}
328.~.~.~ Nonoxo carbonylic {1}
329  DF  .~.~.~.~> Carboxylic esters

DEFINITION

Classification: 208/328

(under subclass 322) Processes wherein a nonoxocarbonylic compound is employed as the solvent.

(1) Note. This subclass contains, for example, extraction processes using carboxylic acids, salts or amides, not classified above, as the solvent.