Therapeutic system for the transdermal or transmucous administration of active substances and the use thereof
Patent 5128137 Issued on July 7, 1992. Estimated Expiration Date: 
February 6, 2010. 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 6, 2010. 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 ReferencesMethod for reducing sensitization or irritation in transdermal drug delivery and means therefor Transdermal estrogen/progestin dosage unit, system and process Prevention of contact allergy by coadministration of a corticosteroid with a sensitizing drug Transdermal estrogen/progestin dosage unit, system and process Patent #: 5023084 InventorsAssigneeApplicationNo. 475609 filed on 02/06/1990US Classes:424/449, Transdermal or percutaneous424/448, Pressure sensitive adhesive means604/307Adhesively attachable to bodyExaminersPrimary: Page, Thurman K.Assistant: Horne, Leon R. Attorney, Agent or FirmInternational ClassA61F 013/00Foreign Application Priority Data1989-02-09 DEAbstractThe present invention relates to a therapeutic system for the transdermal or transmucous administration of active substances via an impermeable backing layer, a reservoir which at least partially comprises active substance, is double-layered and consists of separate parts, and a protective layer, whereby the two reservoir members(a) are positioned substantially parallely on top of each other,(b) are separated from each other by a removable intermediate layer being impermeable to the active substances of said reservoir members,(c) either comprise active substance or auxiliary agents or both at concentrations not corresponding to the distribution equilibrium. | |
