Polymeric diffusion matrix containing phenylpropanolamine
Patent 4289749 Issued on September 15, 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 References 2693438 2776924 2973300 3073742 3214338 3287222 3608070 3731683 3742951 Dosage form InventorsAssigneeApplicationNo. 06/167009 filed on 07/09/1980US Classes:514/653, Hydroxy, bonded directly to carbon, attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding (e.g., beta hydroxy phenethylamines, etc.)424/448, Pressure sensitive adhesive means424/486Synthetic 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 phenylpropanolamine by transdermal delivery to a patient wherein the matrix comprises a polar plasticizer, polyvinylalcohol, polyvinylpyrrolidone, and a pharmaceutically effective amount of phenylpropanolamine. | |
