Oral pulsed dose drug delivery system
October 21, 2018. 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 ReferencesPulsatile drug delivery system Time-controlled explosion systems and processes for preparing the same Diltiazem formulation Controlled absorption diltiazem formulation for once-daily administration Binder-free granules with delayed release of the active compound Controlled absorption diltiazem formulation Controlled absorption diltiazem formulations Sustained pulsewise release pharmaceutical preparation Pharmaceutical dosage unit forms with delayed release Processes for the preparation of delayed action and programmed release pharmaceutical forms and medicaments obtained thereby Inventors
AssigneeApplicationNo. 176542 filed on 10/21/1998US Classes:424/494, Cellulose derivatives424/472, Layered unitary dosage forms424/480Cellulose or derivativeExaminersPrimary: Dudash, DianaAssistant: Berman, Alysia Attorney, Agent or FirmForeign Patent References
International ClassA61K 009/16AbstractA multiple pulsed dose drug delivery system for pharmaceutically active amphetamine salts, comprising an immediate-release component and an enteric delayed-release component wherein (1) the enteric release coating has a defined minimum thickness and/or (2) there is a protective layer between the pharmaceutically active amphetamine salt and the enteric release coating and/or (3) there is a protective layer over the enteric release coating. The product can be composed of either one or a number of beads in a dosage form, including either capsule, tablet, or sachet method for administering the beads.Other References
Field of SearchCellulose derivativesSustained or differential release Plural concentric cores Layered unitary dosage forms Cellulose or derivative Containing solid synthetic polymers Containing polysaccharide (e.g., cellulose sugars, etc.) Containing solid synthetic polymers Where particles are granulated Containing discrete coated particles pellets, granules, or beads Organic coatings Containing proteins or derivatives thereof (e.g., gelatin, etc.) Sustained or differential release type Containing solid synthetic polymers | |
