Mucoadhesive buccal dosage forms
Patent 4900552 Issued on February 13, 1990. Estimated Expiration Date: 
March 30, 2008. 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.
March 30, 2008. 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 307537 3598122 InventorsAssigneeApplicationNo. 175075 filed on 03/30/1988US Classes:424/422, Implant or insert424/435MouthExaminersPrimary: Swisher, Nancy A. B.Attorney, Agent or FirmInternational ClassA61F 007/02AbstractA trilaminate film suitable for prolonged and sustained delivery of an active ingredient in a buccal cavity is disclosed. A hydratable mucoadhesive base layer, a non-adhesive reservoir layer and a water-impermeable carrier film sandwiched between and bonded to the base layer and the reservoir layer are the elements which form the trilaminate film. | |
