Pharmaceutical sustained-release compositions
Patent 4499066 Issued on February 12, 1985. Estimated Expiration Date: 
July 30, 2002. 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 30, 2002. 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 ReferencesInventorsApplicationNo. 06/403475 filed on 07/30/1982US Classes:424/465With claimed perfecting feature in contents (e.g., excipient, lubricant, etc.)ExaminersPrimary: Rose, Shep K.Attorney, Agent or FirmInternational ClassA61K 9/20 (20060101)Foreign Application Priority Data1981-08-05 ITAbstractNew pharmaceutical sustained-release compositions, formulated as tablets, are prepared by mixing the active ingredient with excipient already granulated and coated with polymers and/or copolymers or a polymers- and/or copolymers-mixture substantially insoluble in water. Such pharmaceutical preparations enable one to enhance or to decrease very easily and precisely the sustained-release effect by regulating the granulometry of the excipient, the excipient/active ingredient ratio, the hardness, and the percentage of the polymers and/or copolymers or of the polymers- and/or copolymers-mixture.Other References
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