US PATENT SUBCLASS 436 / 539
.~.~ Involving precipitating reagent

Current as of: June, 1999
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436 /   HD   CHEMISTRY: ANALYTICAL AND IMMUNOLOGICAL TESTING

536  DF  INVOLVING IMMUNE COMPLEX FORMED IN LIQUID PHASE {2}
538  DF  .~ Separation of immune complex from unbound antigen or antibody {3}
539.~.~ Involving precipitating reagent {1}
540  DF  .~.~.~> Double or second antibody

DEFINITION

Classification: 436/539

Involving precipitating reagent:

(under subclass 538) Subject matter wherein the separation of the immune complex from the unbound component is aided by the addition of an agent which enhances the precipitation of the immune complex after the complex has been formed.

(1) Note. Examples of precipitating agents used in the processes provided for here are charcoal, ammonium sulfate and carrier bound antigen or antibody.