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(11)

EP 2 976 436 A1

(12)

(43) Date of publication: 27.01.2016 Bulletin 2016/04 (21) Application number: 14768272.8 (22) Date of filing: 21.03.2014

(51) International Patent Classification (IPC):  C21D 1/02(2006.01) C22C 38/24(2006.01) C22C 38/38(2006.01) C22C 38/06(2006.01) (86) International application number: PCT/US2014/031398 (87) International publication number: WO 2014/153491 (25.09.2014 Gazette 2014/39)

(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: 22.03.2013 US 201313848812 (71) Applicant: Caterpillar Inc. Peoria, IL 61629 (US)	(72) Inventors: BURRIS, Kenneth W. West Peoria, Illinois 61604 (US) TAHAMTAN, Arash Peoria, Illinois 61614 (US) DUSHEKE, Ryan Adam Peoria, Illinois 61614 (US) (74) Representative: Kramer Barske Schmidtchen Patentanwälte PartG mbB  European Patent Attorneys Landsberger Strasse 300 80687 München 80687 München (DE)