System for dispersing drug in biological environment
February 24, 2006. 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 3786813 3917813 Multiple-units drug dose Pharmaceutical preparation comprising a cardiac glycoside with a polymer coating Method for treating hypertonia with N-(2-furfuryl)-4-chloro-5-sulfamoyl-anthranilic acid and preparations thereof Osmotic device that improves delivery properties of agent in situ Capsule product containing high dosage of aspirin in powder or granulated form and alkaline tablet or pellet comprising magnesium carbonate, calcium carbonate and a magnesium dry component Patent #: 4339428 InventorsApplicationNo. 06/832192 filed on 02/24/1986US Classes:424/454, With tamperproof, locking, or sealing feature424/453, Telescoping two piece424/458, Containing discrete coated particles pellets, granules, or beads424/467, Printed, embossed, grooved, or perforated424/473With porous, perforated, apertured, or sieved layer (e.g., dialyzing layer, microporous layer, etc.)ExaminersPrimary: Rosenbaum, C. FredAssistant: Whelton, Denise Attorney, Agent or FirmInternational ClassesA61K 9/00 (20060101)A61J 3/07 (20060101) AbstractA delivery system is disclosed comprising a wall surrounding a lumen containing a plurality of dosage delivery devices. The wall is formed of an environment sensitive material that releases the dosage forms into the environment. The dosage forms comprise a semipermeable wall surrounding a compartment containing drug. A passageway through the semipermeable wall releases drug from the dosage form to the environment. | |
