(19)

(11)

EP 2 855 714 A1

(12)

(43) Date of publication: 08.04.2015 Bulletin 2015/15 (21) Application number: 13803540.7 (22) Date of filing: 28.05.2013

(51) International Patent Classification (IPC):  C21D 1/20(2006.01) C21D 1/22(2006.01) (86) International application number: PCT/US2013/042952 (87) International publication number: WO 2013/188100 (19.12.2013 Gazette 2013/51)

(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: 25.05.2012 US 201261651992 P (71) Applicant: Cola, Gary M. Jr. Washington, MI 48095 (US)	(72) Inventor: Cola, Gary M. Jr. Washington, MI 48095 (US) (74) Representative: Chaillot, Geneviève et al Cabinet Chaillot 16-20 Avenue de l'Agent Sarre B.P. 74 92703 Colombes Cedex 92703 Colombes Cedex (FR)