US Patent 6962717 Pharmaceutical compositions
Patent 6962717 was granted and assigned to Disphar International on November, 2005 by the United States Patent and Trademark Office.
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A pharmaceutical composition for slow release of active ingredient in the gastrointestinal tract, comprising a plurality of active ingredient-containing particles coated with a material insoluble in gastric and intestinal juices, where the particles have as core a homogeneous mixture comprising an active pharmaceutical ingredient and a polymer insoluble in gastric and intestinal juices, with an average internal pore diameter not exceeding 35 μm, makes efficient and pH-independent delaying of release possible even with comparatively small amounts of polymer. It is additionally distinguished by a long shelf life and is particularly suitable also for nonspherical particles.
US Patent 6962717 Pharmaceutical compositions
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