Controlled sustained release tablets containing bupropion
Patent 5427798 Issued on June 27, 1995. Estimated Expiration Date: 
August 12, 2013. 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.
August 12, 2013. 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 Re33994 3819706 3855046 3885046 Compounds and methods of making same Compounds and methods of making them Compounds and methods of making Prolactin suppression in mammals 3H Labeled compounds Radioactive nuclide labeled propiophenone compounds InventorsApplicationNo. 105447 filed on 08/12/1993US Classes:424/464, Tablets, lozenges, or pills424/465, With claimed perfecting feature in contents (e.g., excipient, lubricant, etc.)424/468, Sustained or differential release type424/474, Coated pills or tablets514/772, DESIGNATED ORGANIC NONACTIVE INGREDIENT CONTAINING OTHER THAN HYDROCARBON514/781, Cellulose or derivative514/960, SIGNIFICANT, TABLET FORMULATION (E.G., DESIGNATED EXCIPIENT, DISINTEGRANT, GLYDENT OR LUBRICANT, ETC.)514/970CONTAINING DESIGNATED INGREDIENT TO STABILIZE AN ACTIVE INGREDIENTExaminersPrimary: Phelan, D. GabrielleAssistant: Spear, James M. Attorney, Agent or FirmForeign Patent References
International ClassA61K 009/22Foreign Application Priority Data1992-08-14 GBAbstractA controlled sustained release tablet having at least one year shelf life and containing bupropion hydrochloride, hydroxypropyl methylcellulose and cysteine hydrochloride or glycine hydrochloride with the tablet having a surface area to volume ratio to effectively control bupropion hydrochloride release in the body.Other References
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