Delivery system
Patent 4769027 Issued on September 6, 1988. Estimated Expiration Date: 
February 24, 2007. 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.
February 24, 2007. 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 2099402 3577512 3845770 Osmotic device for dispensing two different medications Osmotic system with instant drug availability Intravenous system for delivering a beneficial agent Patent #: 4586922 InventorsApplicationNo. 07/016966 filed on 02/24/1987US Classes:424/493, Containing polysaccharides (e.g., sugars)424/473With porous, perforated, apertured, or sieved layer (e.g., dialyzing layer, microporous layer, etc.)ExaminersPrimary: Rosenbaum, C. FredAssistant: Kartchner, Gene B. Attorney, Agent or FirmInternational ClassA61K 9/50 (20060101)AbstractPrills of pharmaceutically acceptable material are coated first with a water-permeable polymeric matrix containing a water-soluble pharmaceutically beneficial agent and then overcoated with a water-permeable film containing dispersed therein a water-soluble, particulate pore-forming material. | |
