Piperidine opioid antagonists
Patent 5064834 Issued on November 12, 1991. Estimated Expiration Date: 
October 30, 2010. 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.
October 30, 2010. 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 ReferencesPhenylbutanol derivatives Patent #: 3936468 InventorsAssigneeApplicationNo. 605817 filed on 10/30/1990US Classes:514/279Polycyclo ring system having the six-membered hetero ring as one of the cyclosExaminersPrimary: Friedman, Stanley J.Attorney, Agent or FirmInternational ClassA61K 031/44AbstractThis invention provides trans-3,4 1-substituted-3-substituted-4-methyl-4-(3-substituted phenyl)piperidines as opioid antagonists capable of blocking the mu or kappa receptors in the brain. | |
