Spheronization process using charged resins
Patent 5350584 Issued on September 27, 1994. Estimated Expiration Date: 
June 26, 2012. 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 26, 2012. 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 ReferencesPharmaceutical compositions in the form of beadlets and method Biocidal fine powder and a suspension containing the same Pharmaceutical formulations Controlled release dosage form Pharmaceutical ion exchange resin composition Patent #: 5071646 InventorsAssigneeApplicationNo. 906226 filed on 06/26/1992US Classes:424/501, Contains solid synthetic resin424/78.1, Ion exchange resin424/78.16, Amine containing aromatic group424/502Contains waxes, higher fatty acids, higher fatty alcoholsExaminersPrimary: Page, Thurman K.Assistant: Kulkosky, Peter F. Attorney, Agent or FirmForeign Patent References
International ClassesA61K 009/14A61K 009/18 AbstractThe invention comprises a novel process for the spheronization of charged resins. Spherical multiparticlates are produced which range in size from 0.3 mm to 3 mm in diameter. The spherical particle product is microcrystalline-free. The process consists of the steps of mixing followed by wet granulation, spheronization and drying.Field of SearchPOWDERS, GRANULES OR PARTICLES OF SPECIFIED MESH OR PARTICLE SIZESolid synthetic organic polymer Carboxylic acid or salt thereof Nitrogen containing Ion exchange resin Particulate form (e.g., powders, granules, beads, microcapsules, and pellets) Contains solid synthetic resin Contains waxes, higher fatty acids, higher fatty alcohols Amine containing aromatic group | |
