Dissolution controlled active agent dispenser
Patent 4314557 Issued on February 9, 1982. Estimated Expiration Date: 
May 19, 2000. 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.
May 19, 2000. 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 3641237 3737521 3742951 3892842 3921636 3926188 Novel drug delivery device Medical bandage Vaginal drug dispensing device Method and therapeutic system for providing chemotherapy transdermally InventorAssigneeApplicationNo. 06/150966 filed on 05/19/1980US Classes:424/449, Transdermal or percutaneous604/307Adhesively attachable to bodyExaminersPrimary: Rosenbaum, C. FredAttorney, Agent or FirmInternational ClassA61K 9/70 (20060101)AbstractDrug dispensers comprising a flat body composed of a drug solute phase dispersed in a continuous polymer matrix phase in which the release rate of drug from the body is substantially constant and is controlled by the rate at which the drug solute phase dissolves in the continuous polymer matrix phase. Such control and constancy are realized by establishing specific correlations between the diffusion coefficient, dissolution rate constant, and thickness of the body. | |
