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EP 1 709 034 A2

(12)

(88) Date of publication A3: 25.08.2005 (43) Date of publication: 11.10.2006 Bulletin 2006/41 (21) Application number: 04785921.0 (22) Date of filing: 15.06.2004

(51) International Patent Classification (IPC):  C07D 403/10(2006.01) (86) International application number: PCT/IN2004/000169 (87) International publication number: WO 2005/066158 (21.07.2005 Gazette 2005/29)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 06.01.2004 IN MU00142004 (71) Applicant: IPCA Laboratories Limited Kandivli (West), Numbai 400 067 (Maharashtra) (IN)

(72) Inventors: KUMAR, Ashok Andheri (West) Mumbai 400 053 (IN) SINGH, Rajesh Kumar Keshava Prasad Dahisar(West) Mumbai 400 068 (IN) PANDA, Nalinakshya Balaram Vasai Road(West) Dist Thane (IN) UPARE, Abhay Atmaram Mumbai 400 067 Maharashtra (IN) NIMBALKAR, Manmohan Madhavrao Mahim Mumbai 400 16 (IN) SOUDAGAR, Satish Rajanikant Mumbai 400 092 Maharashtra (IN) SAXENA, Ashvini Kumar Nand Kishore Ratlam 457 001 Madhya Pradesh (IN) (74) Representative: Brand, Thomas Louis  W.P. Thompson & Co., 55 Drury Lane London WC2B 5SQ London WC2B 5SQ (GB)