US PATENT SUBCLASS 424 / 425
.~.~.~.~ Diffusion barrier is matrix

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}
422  DF  .~ Implant or insert {5}
423  DF  .~.~ Surgical implant or material {2}
424  DF  .~.~.~ Membrane or diffusion barrier {1}
425.~.~.~.~ Diffusion barrier is matrix

DEFINITION

Classification: 424/425

Diffusion barrier is matrix:

(under subclass 424) Subject matter in which the diffusion barrier is a matrix.

SEE OR SEARCH THIS CLASS, SUBCLASS:

469+, for matrix containing tablets.

484+, for orally ingestable matrixes.