Polymeric diffusion matrix containing clonidine
Patent 4292303 Issued on September 29, 1981. Estimated Expiration Date: 
July 9, 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.
July 9, 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 ReferencesInventorsAssigneeApplicationNo. 06/167106 filed on 07/09/1980US Classes:514/392, Divalent chalcogen or acyclic nitrogen double bonded at 2-position, or tautomeric equivalent424/486Synthetic polymerExaminersPrimary: Rose, Shep K.Attorney, Agent or FirmInternational ClassesA61K 31/135 (20060101)A61K 9/70 (20060101) A61K 31/415 (20060101) A61K 31/565 (20060101) Foreign Application Priority Data1979-08-14 JPAbstractThere is disclosed a polymeric diffusion matrix for the sustained release of clonidine by transdermal delivery to a patient wherein the matrix comprises a polar plasticizer, polyvinylalcohol, polyvinylpyrrolidone, and a pharmaceutically effective amount of clonidine. | |
