US PATENT SUBCLASS 530 / 418
.~.~ Precipitation

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}
418.~.~ Precipitation {1}
419  DF  .~.~.~> With added material {2}

DEFINITION

Classification: 530/418

Precipitation:

(under subclass 412) Processes in which a protein is separated from a liquid by physical or chemical means to cause the protein or undesired material to agglomerate, coagulate, coalesce or flocculate.

(1) Note. Precipitation may be either by chemical reaction, including salting out, or by physical means such as agitation or heat.

(2) Note. See Class 210, subclass 702 for the disposition of precipitation processes Class 210 and other related classes.