US PATENT SUBCLASS 208 / 327
.~.~.~.~ Furfural and derivatives

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}
325  DF  .~.~.~ Heterocyclic {2}
327.~.~.~.~ Furfural and derivatives

DEFINITION

Classification: 208/327

(under subclass 325) Processes wherein the heterocyclic compound is furfural or a derivative thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

325, for solvent fractionation of mineral oil which involve the use of a furane type heterocyclic compound other than furfural or derivative thereof.