Composition comprising a tramadol material and any of codeine, oxycodone or hydrocodone and their use
Patent 5468744 Issued on November 21, 1995. Estimated Expiration Date: 
June 30, 2014. 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.
June 30, 2014. 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 References3652589 InventorsAssigneeApplicationNo. 268382 filed on 06/30/1994US Classes:514/282, One of the five cyclos is five-membered and includes ring chalcogen (e.g., codeine, morphine, etc.)514/646Benzene ring containingExaminersPrimary: Henley, III, RaymondAssistant: Jarvis, William R. A. Attorney, Agent or FirmInternational ClassesA61K 031/485A61K 031/135 AbstractThis invention relates to compositions comprising a tramadol material selected from the group consisting of tramadol, its stereoisomers and its pharmaceutically acceptable salts and either codeine or oxycodone, and their use in treating pain. When the components, i.e., tramadol materials and either of codeine or oxycodone, of the composition are within certain ratios of pharmacological effects of the compositions are superaddditive (synergistic). | |
