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(11)

EP 2 640 862 A1

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(43) Date of publication: 25.09.2013 Bulletin 2013/39 (21) Application number: 11841479.6 (22) Date of filing: 18.11.2011

(51) International Patent Classification (IPC):  C22B 21/00(2006.01) C22B 3/22(2006.01) C22B 3/10(2006.01) C22B 3/26(2006.01) (86) International application number: PCT/CA2011/001271 (87) International publication number: WO 2012/065253 (24.05.2012 Gazette 2012/21)

(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: 19.11.2010 US 415473 P (71) Applicant: Orbite Aluminae Inc. Saint-Laurent, Québec H4T 1S3 (CA)	(72) Inventors: BOUDREAULT, Richard Saint-Laurent, Québec H4R 2T3 (CA) BIASOTTO, Fabienne Outremont, Québec H2V 3Y6 (CA) FOURNIER, Joel Carignan, Québec J3L 4Z8 (CA) ALEX, Serge Québec, Québec G1Y 1P1 (CA) (74) Representative: Regimbeau  20, rue de Chazelles 75847 Paris Cedex 17 75847 Paris Cedex 17 (FR)