Orally administerable sustained release pharmaceutical formulations
Patent 4797286 Issued on January 10, 1989. Estimated Expiration Date: 
January 10, 2006. 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.
January 10, 2006. 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 of forming truss plates Patent #: 4625535 InventorsAssigneeApplicationNo. 06/797305 filed on 11/12/1985US Classes:424/456, Gelatin424/457Sustained or differential releaseExaminersPrimary: Page, Thurman K.Assistant: Horne, Leon R. Attorney, Agent or FirmInternational ClassA61K 9/48 (20060101)AbstractThis invention provides orally administerable pharmaceutical formulations having a semi-solid matrix containing a hydrophilic substance capable of creating channels in a hydrophobic carrier matrix thereby providing a sustained rate of release of an active agent from the formulation.Other References
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