Controlled release-initiation and controlled release-rate pharmaceutical composition
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United States of America Patent
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Mar 5, 1996
Grant Date -
N/A
app pub date -
Aug 24, 1994
filing date -
Aug 25, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A controlled release-initiation and controlled release-rate pharmaceutical composition in which a drug-containing composition is coated with a membrane layer comprising a water insoluble high polymer and silicone. The starting time for the release of drugs from the controlled release-initiation and controlled release-rate pharmaceutical composition of this invention and the drug-releasing rate thereafter can be controlled at will.
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