Extended release pharmaceutical formulations
August 29, 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 References 3119742 3458622 3623997 Fungimycin compositions New oral form of medicament and a method for producing it Sustained release tablet formulations Sustained release indomethacin Controlled release tablet Method and composition for the preparation of controlled long-acting pharmaceuticals Sustained release pharmaceutical compositions InventorsApplicationNo. 898539 filed on 06/15/1992US Classes:424/480, Cellulose or derivative424/457, Sustained or differential release424/458, Containing discrete coated particles pellets, granules, or beads424/459, Organic coatings424/460, Containing proteins or derivatives thereof (e.g., gelatin, etc.)424/461, Containing polysaccharide (e.g., cellulose sugars, etc.)424/462, Containing solid synthetic polymers424/468, Sustained or differential release type424/474, Coated pills or tablets424/475, Organic coatings424/494, Cellulose derivatives424/497, Containing solid synthetic polymers427/2.21Retarded or controlled-release layer produced (e.g., enteric)ExaminersPrimary: Krass, FrederickAssistant: Harrison, Robert H. Attorney, Agent or FirmForeign Patent References
International ClassesA61K 009/56A61K 009/30 AbstractAn extended release pharmaceutical formulation adapted to approach zero order release of drug over a 12 to at least 24 hour period, comprised of a mixture of 0 to about 50% of an immediate release particle containing a drug, inert substrate and binder, coated with talc and up to 100% of an extended release particle comprising the immediate release particle coated with a dissolution modifying system containing plasticizers and a film forming agent.Other References
Field of SearchCellulose or derivativeSustained or differential release Containing discrete coated particles pellets, granules, or beads Organic coatings Containing proteins or derivatives thereof (e.g., gelatin, etc.) Containing polysaccharide (e.g., cellulose sugars, etc.) Containing solid synthetic polymers Sustained or differential release type Coated pills or tablets Organic coatings Cellulose derivatives Containing solid synthetic polymers Retarded or controlled-release layer produced (e.g., enteric) | |
