(19)

(11)

EP 2 890 825 A1

(12)

(43) Date of publication: 08.07.2015 Bulletin 2015/28 (21) Application number: 13759947.8 (22) Date of filing: 28.08.2013

(51) International Patent Classification (IPC):  C22C 38/02(2006.01) C22C 38/20(2006.01) C22C 38/26(2006.01) C22C 38/04(2006.01) C22C 38/24(2006.01) C22C 38/28(2006.01) (86) International application number: PCT/US2013/056999 (87) International publication number: WO 2014/036091 (06.03.2014 Gazette 2014/10)

(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 Designated Extension States: BA ME (30) Priority: 31.08.2012 US 201261695771 P 15.03.2013 US 201313837500 (71) Applicant: Ak Steel Properties, Inc. West Chester, OH 45069 (US)	(72) Inventor: YOSHITAKE, Eizo Middletown, OH 45042 (US) (74) Representative: Samson & Partner Patentanwälte mbB  Widenmayerstraße 6 80538 München 80538 München (DE)