Spray drying method and apparatus
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United States of America Patent
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Sep 16, 1997
Grant Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Jun 7, 1995
priority date (Note) -
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Abstract
Methods for preparing microspheres are provided. A carrier vehicle and a precipitator are nebulized and contacted. Alternatively, a carrier is nebulized in an aqueous acid and the concentration of the acid is decreased. Apparatus are also provided.
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