US PATENT SUBCLASS 210 / 645
.~.~.~ Biological fluid (e.g., blood, urine, etc.)

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

600  DF  PROCESSES {14}
634  DF  .~ Liquid/liquid solvent or colloidal extraction or diffusing or passing through septum selective as to material of a component of liquid; such diffusing or passing being effected by other than only an ion exchange or sorption process {11}
644  DF  .~.~ Diffusing or passing through septum selective as to material of a component in liquid/liquid solvent or colloidal extraction {2}
645.~.~.~ Biological fluid (e.g., blood, urine, etc.) {1}
646  DF  .~.~.~.~> Hemodialysis {1}

DEFINITION

Classification: 210/645

Biological fluid (e.g., blood, urine, etc.):

(under subclass 644) Process in which the liquid treated is from an animal or contains living organisms (e.g., ferment).

SEE OR SEARCH CLASS

128, Surgery, for a method of treating a biological fluid and a significant step of withdrawing from, or returning to, the body such a fluid.

260, Chemistry of Carbon Compounds, appropriate subclass for a method of obtaining an organic compound from a biological fluid.

424, Drug, Bio-Affecting and Body Treating Compositions, for a composition comprising a biological fluid for treating a body and a process of making such a composition.

436, Chemistry: Analytical and Immunological Testing,

1+, for a method of testing or analysing a biological fluid.