Methods of improving control of release rates and products useful in same
Patent 3976071 Issued on August 24, 1976. Estimated Expiration Date: 
August 24, 1993. 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.
August 24, 1993. 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 3225766 3435008 3545439 3630200 3641237 3773919 3810458 3811444 3887699 InventorAssigneeApplicationNo. 431493 filed on 01/07/1974US Classes:424/425, Diffusion barrier is matrix424/423, Surgical implant or material424/486, Synthetic polymer604/500, Method606/231Organic material containingExaminersPrimary: Medbery, Aldrich F.Attorney, Agent or FirmInternational ClassA61K 9/20 (20060101)AbstractImproved processes for obtaining the sustained release of pharmaceuticals from polymer matrices comprising the utilization of such steps as will allow the formation of solid solutions between pharmaceutical and its matrix or, conversely and in a proper case, substantially avoiding formation of any solid solution between the matrix and pharmaceutical. The advantage of such processes is the greater predictability of qualitative and quantitative nature of release rates of products formed therewith. | |
