(19)

(11)

EP 2 618 951 A2

(12)

(88) Date of publication A3: 05.07.2012 (43) Date of publication: 31.07.2013 Bulletin 2013/31 (21) Application number: 11757452.5 (22) Date of filing: 25.08.2011

(51) International Patent Classification (IPC):  B21D 5/00(2006.01) B21B 3/00(2006.01) C21D 1/42(2006.01) C22F 1/18(2006.01) B21D 22/00(2006.01) B21J 5/00(2006.01) C21D 7/13(2006.01) (86) International application number: PCT/US2011/049052 (87) International publication number: WO 2012/039882 (29.03.2012 Gazette 2012/13)

(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: 20.09.2010 US 885620 (71) Applicant: ATI Properties, Inc. Albany, OR 97321 (US)	(72) Inventors: STEFANSSON, Njall Canonsburg Pennsylvania 15317 (US) NICHOLS, Andrew Upper St. Clair Pennsylvania 15241 (US) CLEPPE, Michael Chesterton Indiana 46304 (US) (74) Representative: Snelgrove, Susan Elizabeth  Potter Clarkson LLP The Belgrave Centre Talbot Street Nottingham Nottinghamshire NG1 5GG Nottinghamshire NG1 5GG (GB)