(19)

(11)

EP 2 646 585 A2

(12)

(88) Date of publication A3: 06.12.2012 (43) Date of publication: 09.10.2013 Bulletin 2013/41 (21) Application number: 12713793.3 (22) Date of filing: 13.03.2012

(51) International Patent Classification (IPC):  C22C 1/04(2006.01) (86) International application number: PCT/JP2012/001742 (87) International publication number: WO 2012/132280 (04.10.2012 Gazette 2012/40)

(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: 30.03.2011 JP 2011074726 (71) Applicant: Kabushiki Kaisha Toyota Chuo Kenkyusho Nagakute-shi, Aichi 480-1192 (JP)	(72) Inventors: MATSUOKA, Hideaki Nagakute-shi Aichi 480-1192 (JP) YAMADA, Yuka Nagakute-shi Aichi 480-1192 (JP) (74) Representative: Kramer - Barske - Schmidtchen  Landsberger Strasse 300 80687 München 80687 München (DE)