Method for the preparation of a theophylline sustained release pharmaceutical composition and the composition prepared thereby
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United States of America Patent
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Jun 25, 1991
Issued Date -
N/A
app pub date -
Jun 7, 1988
filing date -
Apr 7, 1986
priority date (Note) -
Expired
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Abstract
A method for the preparation of a sustained release pharmaceutical composition comprising forming a fluidized ring of said particles and contacting said particles maintained suspended in said ring with a liquid composition containing a pharmaceutically active material and an alkali-soluble material.
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