Method of manufacturing wax matrices
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United States of America Patent
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Dec 23, 1997
Grant Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Oct 16, 1992
priority date (Note) -
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Abstract
A method of producing a wax matrix for controlled release of a pharmaceutically active ingredient is provided. The method includes the steps of feeding a wax and a pharmaceutically active ingredient into a multi-screw extruder and thoroughly mixing the wax with the pharmaceutically active ingredient using the multi-screw extruder to form a wax matrix. The wax matrix thus produced provides a controlled release of the active ingredient.
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