Cryogel oral pharmaceutical composition containing therapeutic agent
Patent 5288503 Issued on February 22, 1994. Estimated Expiration Date: 
June 16, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 16, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3594470 Prolonged release pharmaceutical preparations Controlled release pharmaceutical preparations Sustained release drug-resin complexes Sustained release oral suspensions Taste-masked pharmaceutical compositions Patent #: 5084278 InventorsApplicationNo. 899369 filed on 06/16/1992US Classes:424/497, Containing solid synthetic polymers424/78.1, Ion exchange resin424/78.12, Adsorbate or treating agent contains nitrogen424/78.13Oxygen or sulfur heterocycleExaminersPrimary: Phelan, D. GabrielleAttorney, Agent or FirmInternational ClassesA61K 009/16A61K 009/50 AbstractAn oral pharmaceutical composition comprising a hydrophobic resin or ion exchange resin which has a therapeutic agent bound thereto forming an agent-resin complex is disclosed. The complex is coated with a water-permeable diffusion barrier of poly(vinyl alcohol) polymer cryogel. | |
