Multilayer sustained release granule
March 3, 2009. 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 3577512 Nitrofurantoin sustained release tablet Prolonged-release pharmaceutical compositions for oral administration, their methods of making and use Theophylline sustained release granule Sustained release pharmaceutical compositions Sustained release pharmaceutical compositions Protective coating compositions Sustained release pharmaceutical composition of solid medical material Prolonged-action multiple-layer tablets Long-lasting three-layered pharmaceutical film preparations InventorsApplicationNo. 253367 filed on 09/30/1988US Classes:428/407, Including synthetic resin or polymer424/468, Sustained or differential release type424/472, Layered unitary dosage forms424/476, Containing waxes, higher fatty acids, higher fatty alcohols, or derivatives thereof (e.g., chocolate)424/494, Cellulose derivatives424/498, Containing waxes, higher fatty acids, higher fatty alcohols, or derivatives thereof428/402.2, Microcapsule with fluid core (includes liposome)428/402.21, Solid-walled microcapsule from synthetic polymer428/402.24, Microcapsule with solid core (includes liposome)428/403CoatedExaminersPrimary: Lesmes, George F.Assistant: Brown, Christopher Attorney, Agent or FirmForeign Patent References
International ClassesB32B 027/00A61K 009/56 Foreign Application Priority Data1985-10-23 JPAbstractA multilayer granule of the invention comprises a core, a slow-release layer, a rapid-release layer to be provided outer of said slow-release layer and a film layer containing a metal stearate and being deposited between the slow-release layer and the rapid-release layer. A pharmacologically effective component is kept to discharge for long.Other References
Field of SearchMicrocapsule with fluid core (includes liposome)Solid-walled microcapsule from synthetic polymer Addition polymer from unsaturated monomers only Microcapsule with solid core (includes liposome) Coated Including synthetic resin or polymer Of natural gum, rosin, natural oil or lac Of carbohydrate Sustained or differential release type Layered unitary dosage forms Containing waxes, higher fatty acids, higher fatty alcohols, or derivatives thereof (e.g., chocolate) Cellulose derivatives Containing waxes, higher fatty acids, higher fatty alcohols, or derivatives thereof Coated (e.g., microcapsules) | |
