Method of producing zero-order controlled-released devices
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United States of America Patent
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Feb 4, 1992
Grant Date -
N/A
app pub date -
Dec 2, 1988
filing date -
Dec 2, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved method of producing a reservoir device having a rate-controlling membrane and zero-order (constant) release of an agent is provided. A core is sprayed with a solution having a polymer and a solvent, the solvent having a first component which is a rapidly evaporating, low-boiling-point first solvent and a slowly evaporating, high-boiling-point second solvent.
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