Controlled-release dosage forms comprising zolpidem or a salt thereof
Patent 6514531 Issued on February 4, 2003. Estimated Expiration Date: 
July 16, 2021. 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 16, 2021. 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 ReferencesProgrammed release oral solid pharmaceutical dosage form Abuse resistant tablets 6372255 InventorsAssigneeApplicationNo. 857154 filed on 07/16/2001US Classes:424/468, Sustained or differential release type424/451, Capsules (e.g., of gelatin, of chocolate, etc.)424/457, Sustained or differential release424/464, Tablets, lozenges, or pills424/469, Discrete particles in supporting matrix424/470, Where particles are granulated424/471, Plural concentric cores424/472, Layered unitary dosage forms424/474, Coated pills or tablets424/489, Particulate form (e.g., powders, granules, beads, microcapsules, and pellets)424/490Coated (e.g., microcapsules)ExaminersPrimary: Page, Thurman K.Assistant: Tran, S. Attorney, Agent or FirmForeign Patent References
International ClassesA61K 009/22A61K 009/48 A61K 009/26 A61K 009/52 A61K 009/16 Foreign Application Priority Data1998-12-04 EPAbstractThe present invention relates to controlled-release dosage forms of zolpidem or salts thereof adapted to release zolpidem over a predetermined time period, according to a biphasic profile of dissolution, where the first phase is an immediate release phase and the second phase is a prolonged release phase and particular embodiments thereof intended to avoid abuse.Field of SearchCapsules (e.g., of gelatin, of chocolate, etc.)Sustained or differential release Tablets, lozenges, or pills Sustained or differential release type Discrete particles in supporting matrix Where particles are granulated Plural concentric cores Layered unitary dosage forms Coated pills or tablets Particulate form (e.g., powders, granules, beads, microcapsules, and pellets) Coated (e.g., microcapsules) | |
