Aminoalkyl furan derivative
Patent 4521431 Issued on June 4, 1985. Estimated Expiration Date: 
August 9, 2002. 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 9, 2002. 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 ReferencesAminoalkyl furan derivatives Aminoalkyl furan derivatives Patent #: 4279819 InventorAssigneeApplicationNo. 06/406710 filed on 08/09/1982US Classes:514/471, Nitrogen containing549/495Chalcogen attached indirectly to the hetero ring by acyclic nonionic bondingExaminersPrimary: Raymond, Richard L.Attorney, Agent or FirmInternational ClassesC07D 307/00 (20060101)C07D 307/52 (20060101) Foreign Application Priority Data1980-10-01 GBAbstractA novel crystal form of ranitidine (N-[2-[[[5-(dimethylamino)methyl]-2-furanyl]methyl]thio]ethyl-N'-methyl-2- nitro-1,1-ethenediamine) hydrochloride, designated Form 2, and having favorable filtration and drying characteristics, is characterized by its infra-red spectrum and/or by its x-ray powder diffraction patterns. |
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