US PATENT SUBCLASS 424 / 483
.~.~.~ Ion-exchange resins

Current as of: June, 1999
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424 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

400  DF  PREPARATIONS CHARACTERIZED BY SPECIAL PHYSICAL FORM {12}
464  DF  .~ Tablets, lozenges, or pills {5}
474  DF  .~.~ Coated pills or tablets {2}
483.~.~.~ Ion-exchange resins

DEFINITION

Classification: 424/483

Ion-exchange resins:

(under subclass 474) Subject matter in which the material is an ion-exchange resin.