(19)

(11)

EP 2 509 733 A1

(12)

(43) Date of publication: 17.10.2012 Bulletin 2012/42 (21) Application number: 10795930.6 (22) Date of filing: 07.12.2010

(51) International Patent Classification (IPC):  B22F 7/06(2006.01) E21B 10/567(2006.01) C22C 26/00(2006.01) E21B 10/573(2006.01) (86) International application number: PCT/EP2010/007425 (87) International publication number: WO 2011/069637 (16.06.2011 Gazette 2011/24)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR (30) Priority: 07.12.2009 GB 0921393 (71) Applicants: Element Six Limited Shannon (IE) ELEMENT SIX ABRASIVES S.A. 2763 Luxembourg (LU)	(72) Inventors: SMALLMAN, Clint Guy London W4 5YE (GB) ADIA, Moosa Mahomed Springs 1559 (ZA) LAI SANG, Lai Hong Springs 1559 (ZA) (74) Representative: Reeve, Anna Elizabeth  Element Six Limited 3rd Floor, Building 4, Chiswick Park 566 Chiswick High Road GB-London W4 5YE GB-London W4 5YE (GB)