Pharmaceutically useful micropellets with a drug-coated core and controlled-release polymeric coat
March 15, 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 ReferencesSustained release aspirin Slow release pharmaceutical composition Dry sustained release theophylline oral formulation Process for treating dosage forms Controlled release composite core coated microparticles Dry sustained release theophylline oral formulation Pharmaceutical product in the form of a pellet with continuous, delayed medicament substance emission Composition for the oral administration of pharmaceuticals Patent #: 4935247 InventorsApplicationNo. 494206 filed on 03/15/1990US Classes:424/495, Ethyl cellulose424/461, Containing polysaccharide (e.g., cellulose sugars, etc.)424/462, Containing solid synthetic polymers424/494, Cellulose derivatives424/497, Containing solid synthetic polymers514/951POWDERS, GRANULES OR PARTICLES OF SPECIFIED MESH OR PARTICLE SIZEExaminersPrimary: Page, Thurman K.Assistant: Webman, E. J. Attorney, Agent or FirmInternational ClassesA61K 009/58A61K 009/62 A61K 009/16 AbstractA pharmaceutical preparation comprising drug micropellets containing a drug coated on a core material wherein each pellet ranges in size from about 70 microns to 750 microns and wherein each micropellet is coated with a controlled release coating.Other References
Field of SearchParticulate form (e.g., powders, granules, beads, microcapsules, and pellets)Coated (e.g., microcapsules) Ethyl cellulose Cellulose derivatives Containing polysaccharide (e.g., cellulose sugars, etc.) Microcapsule-sustained or differential release POWDERS, GRANULES OR PARTICLES OF SPECIFIED MESH OR PARTICLE SIZE Wettable | |
