AN IMPROVED PROCESS FOR THE PREPARATION OF TAMSULOSIN HYDROCHLORIDE

Details for Australian Patent Application No. 2002337604 (hide)

Owner NATCO PHARMA LIMITED

Inventors KONAKANCHI, Durga, Prasad; SAMBASIVA, Ramachandran; VENKAIAH CHOWDARY, Nannapaneni

Pub. Number AU-A-2002337604

PCT Number PCT/IN02/00200

PCT Pub. Number WO2004/016582

Priority 599/MAS/2002 14.08.02 IN

Filing date 7 October 2002

Wipo publication date 3 March 2004

International Classifications

C07C 303/40 Preparation of esters or amides of sulfuric acids

C07C 311/37 Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups

Event Publications

20 February 2003 Complete Application Filed

  Priority application(s): 599/MAS/2002 14.08.02 IN

22 April 2004 Application Open to Public Inspection

  Published as AU-A-2002337604

28 April 2005 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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