US PATENT SUBCLASS 530 / 419
.~.~.~ With added material


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  DF  .~.~ Precipitation {1}
419.~.~.~ With added material {2}
420  DF  .~.~.~.~> Inorganic
421  DF  .~.~.~.~> Polymeric, e.g., polyethylene glycol, etc.


DEFINITION

Classification: 530/419

With added material:

(under subclass 418) Processes in which precipitation is brought about by adding a material thereto.