Patents Assigned to Tris Pharma
  • Abuse resistant opioid drug-ion exchange resin complexes having hybrid coatings
    Patent number: 8202542
    Abstract: A sustained release formulation for opioid drugs is described. The formulation contains an opioid-ion exchange resin complex having a hybrid coating. The hybrid coating contains a cured polyvinylacetate polymer and a pH-dependent enteric coating layer mixed therein. Also provided are methods of making and using same.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: June 19, 2012
    Assignee: Tris Pharma
    Inventors: Ketan Mehta, Yu-Hsing Tu, Alivia Chaudhuri, Ashok Perumal