(19)

(11)

EP 2 329 050 A1

(12)

(43) Date of publication: 08.06.2011 Bulletin 2011/23 (21) Application number: 09815780.3 (22) Date of filing: 29.09.2009

(51) International Patent Classification (IPC):  C22B 1/16(2006.01) B22F 3/02(2006.01) C22B 1/244(2006.01) (86) International application number: PCT/IN2009/000532 (87) International publication number: WO 2010/035289 (01.04.2010 Gazette 2010/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR Designated Extension States: AL BA RS (30) Priority: 29.09.2008 IN KA16852008 (71) Applicant: Tata Steel Limited Jamshedpur 831001 (IN)	(72) Inventors: SINGH, Veerendra Jamshedpur 831 001 (IN) RAO, Saripalli, M. Jamshedpur 831 001 (IN) MALLICK, Prasanta Jamshedpur 831 001 (IN) DWARAPUDI, Srivivas Jamshedpur 831 001 (IN) MISHRA, P., K. Jamshedpur 831 001 (IN) (74) Representative: Green, Mark Charles  Urquhart-Dykes & Lord LLP 30 Welbeck Street London W1G 8ER London W1G 8ER (GB)