Sustained release oral suspensions
Patent 5186930 Issued on February 16, 1993. Estimated Expiration Date: 
December 19, 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.
December 19, 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 References 3138525 Prolonged release pharmaceutical preparations Liquid prolonged release pharmaceutical formulations containing ionic constituents Controlled release pharmaceutical preparations Confectionery delivery system for mineral supplements Organopolysiloxane composition Patent #: 4894224 InventorsAssigneeApplicationNo. 630122 filed on 12/19/1990US Classes:424/78.1, Ion exchange resin424/494, Cellulose derivatives424/495, Ethyl cellulose424/497, Containing solid synthetic polymers424/498Containing waxes, higher fatty acids, higher fatty alcohols, or derivatives thereofExaminersPrimary: Page, Thurman K.Assistant: Kulkosky, P. Attorney, Agent or FirmForeign Patent References
International ClassesA61K 031/74A61K 047/34 AbstractStable sustained release wax- and polymer-coated drug-ion exchange resin complexes especially useful in preparing oral suspensions are disclosed.Field of SearchContains waxes, higher fatty acids, higher fatty alcoholsIon-exchange resins Wearing apparel, fabric, or cloth Placenta or umbilical cord Cellulose derivatives Ethyl cellulose Containing solid synthetic polymers Containing waxes, higher fatty acids, higher fatty alcohols, or derivatives thereof Ion exchange resin | |
