Controlled release composite
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United States of America Patent
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Jun 22, 2004
Issued Date -
N/A
app pub date -
Nov 1, 2001
filing date -
Feb 2, 1999
priority date (Note) -
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Abstract
A composite is disclosed having a controlled rate of dissolution. The composite includes (a) a first region that includes a first composition that includes calcium sulfate, the first region exhibiting a first rate of dissolution; and (b) a second region that includes a second composition that includes calcium sulfate, the second region exhibiting a second rate of dissolution, the first rate of dissolution being different from the second rate of dissolution
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