US PATENT SUBCLASS 435 / 297.3
.~.~.~.~ Including a spinning semipermeable membrane or filter

Current as of: June, 1999
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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

283.1  DF  APPARATUS {9}
289.1  DF  .~ Bioreactor {16}
297.1  DF  .~.~ Including semipermeable membrane or filter {2}
297.2  DF  .~.~.~ Including perfusion means {2}
297.3.~.~.~.~ Including a spinning semipermeable membrane or filter

DEFINITION

Classification: 435/297.3

Including a spinning semipermeable membrane or filter:

(under subclass 297.2) Apparatus wherein a semipermeable membrane or filter rotates or spins about an axis.

SEE OR SEARCH CLASS

210, Liquid Purification or Separation, particularly

359+, for apparatus using movable filters.