Controlled release tablet containing water soluble medicament
Patent 5126145 Issued on June 30, 1992. Estimated Expiration Date: 
June 11, 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.
June 11, 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 3870790 Method and composition for the preparation of controlled long-acting pharmaceuticals Prolonged release therapeutic compositions based on hydroxypropylmethylcellulose Sustained release therapeutic compositions based on high molecular weight hydroxypropylmethylcellulose Method and composition for the preparation of controlled long-acting pharmaceuticals for oral administration Controlled release formulation Patent #: 4756911 InventorsApplicationNo. 536184 filed on 06/11/1990US Classes:424/465, With claimed perfecting feature in contents (e.g., excipient, lubricant, etc.)424/468, Sustained or differential release type424/469, Discrete particles in supporting matrix424/470, Where particles are granulated424/488, Polysaccharides (e.g., cellulose, etc.)424/489, Particulate form (e.g., powders, granules, beads, microcapsules, and pellets)424/499, Contains proteins or derivative or polysaccharides or derivative424/502, Contains waxes, higher fatty acids, higher fatty alcohols514/960, SIGNIFICANT, TABLET FORMULATION (E.G., DESIGNATED EXCIPIENT, DISINTEGRANT, GLYDENT OR LUBRICANT, ETC.)514/964SUSTAINED OR DIFFERENTIAL RELEASE TYPEExaminersPrimary: Page, Thurman K.Assistant: Spear, James M. Foreign Patent References
International ClassesA61K 009/20A61K 009/22 AbstractA sustained or controlled release tablet is disclosed. The tablet comprises a water soluble medicament, a hydroxypropyl methylcellulose having sustaining action, a pharmaceutical binding agent, and a hydrophobic component.Other References
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