US PATENT SUBCLASS 530 / 422
.~.~ Solvent extraction

Current as of: June, 1999
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530 /   HD   CHEMISTRY: NATURAL RESINS OR DERIVATIVES; PEPTIDES OR PROTEINS; LIGNINS OR REACTION PRODUCTS THEREOF

350  DF  PROTEINS, I.E., MORE THAN 100 AMINO ACID RESIDUES {14}
412  DF  .~ Separation or purification {6}
422.~.~ Solvent extraction {2}
423  DF  .~.~.~> Oxygenated material {2}
426  DF  .~.~.~> Hydrocarbon or halogenated hydrocarbon

DEFINITION

Classification: 530/422

Solvent extraction:

(under subclass 412) Process in which a protein is separated from a solid or liquid mixture by preferential dissolution in an added solvent.

(1) Note. See Class 210, subclass 634 and the extensive notes therein for the disposition of solvent extraction in that class.