Polymorphic clopidogrel hydrogenesulphate form
Patent 6429210 Issued on August 6, 2002. Estimated Expiration Date: 
April 5, 2021. 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.
April 5, 2021. 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 ReferencesDextro-rotatory enantiomer of methyl alpha-5 (4,5,6,7-tetrahydro (3,2-c) thieno pyridyl) (2-chlorophenyl)-acetate and the pharmaceutical compositions containing it 2-thienylglycidic derivative, process for its preparation and its use as synthesis intermediate Patent #: 5132435 InventorsAssigneeApplicationNo. 623333 filed on 04/05/2001US Classes:514/301, Ring sulfur in the bicyclo ring system546/114Ring sulfur in the bicyclo ring systemExaminersPrimary: Aulakh, Charanjit S.Attorney, Agent or FirmForeign Patent References
International ClassesA61K 031/436.5C07D 495/04 Foreign Application Priority Data1998-06-15 FRAbstractNovel orthorombic polymorph of clopidogrel hydrogen sulfate or hydrogen sulfate of methyl (+)-(S)--(2-chlorophenyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-5 -acetate and a process for its preparation. |
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