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EP 2 601 321 A1

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(43) Date of publication: 12.06.2013 Bulletin 2013/24 (21) Application number: 11760871.1 (22) Date of filing: 04.08.2011

(51) International Patent Classification (IPC):  C21D 7/06(2006.01) C21D 1/06(2006.01) C21D 11/00(2006.01) C23C 8/80(2006.01) C23C 8/22(2006.01) (86) International application number: PCT/JP2011/004416 (87) International publication number: WO 2012/017658 (09.02.2012 Gazette 2012/06)

(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: 05.08.2010 JP 2010176681 (71) Applicant: Sintokogio, Ltd. Nagoya-shi, Aichi 450-0002 (JP)	(72) Inventors: KOBAYASHI, Yuji Toyokawa-shi Aichi 442-8505 (JP) TSUJI, Toshiya Toyokawa-shi Aichi 442-8505 (JP) (74) Representative: Thum, Bernhard  Wuesthoff & Wuesthoff Patent- und Rechtsanwälte Schweigerstrasse 2 81541 München 81541 München (DE)