A controlled release pharmaceutical composition comprising a physiologically active agent dispersed in preformed porous polymeric microparticles is provided. The active agent concentration may be up to about 10% by weight to achieve controlled release. Each of the porous microparticles has a plurality...http://www.google.fr/patents/US5470582?utm_source=gb-gplus-shareBrevet US5470582 - Controlled delivery of pharmaceuticals from preformed porous polymeric microparticles
Controlled delivery of pharmaceuticals from preformed porous polymeric ...
