Nitrofurantoin sustained release tablet
Patent 4122157 Issued on October 24, 1978. Estimated Expiration Date: 
March 4, 1997. 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.
March 4, 1997. 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 3065143 3558768 3773920 InventorAssigneeApplicationNo. 05/774279 filed on 03/04/1977US Classes:424/472Layered unitary dosage formsExaminersPrimary: Rose, Shep K.Attorney, Agent or FirmInternational ClassesA61K 9/24 (20060101)A61K 31/415 (20060101) AbstractA pharmaceutically acceptable layered tablet containing nitrofurantoin in substained release form. | |
