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Modified release dosage forms

  • US 8,545,887 B2
  • Filed: 09/28/2002
  • Issued: 10/01/2013
  • Est. Priority Date: 09/28/2001
  • Status: Expired due to Fees
First Claim
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1. A dosage form comprising:

  • (a) at least one active ingredient;

    (b) a core having a first surface portion upon which resides a first coating and a second surface portion which is substantially free of the first coating; and

    (c) a shell which resides upon at least part of both the first coating and the second surface portion of the core,wherein the shell comprises a different material from the first coating,wherein the core comprises a cavity, wherein the cavity is an aperture which extends entirely through the core,wherein at least a portion of the second surface portion of the core is located within the cavity, andwherein the shell resides upon at least a part of the second surface portion of the core which is located within the cavity.

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