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EP 2 191 028 A1

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(43) Date of publication: 02.06.2010 Bulletin 2010/22 (21) Application number: 08831622.9 (22) Date of filing: 18.09.2008

(51) International Patent Classification (IPC):  C22C 23/04(2006.01) C22F 1/06(2006.01) C22C 23/06(2006.01) B22D 21/04(2006.01) (86) International application number: PCT/JP2008/067356 (87) International publication number: WO 2009/038215 (26.03.2009 Gazette 2009/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 18.09.2007 JP 2007241599 (71) Applicants: Kabushiki Kaisha Kobe Seiko Sho Chuo-ku Kobe-shi Hyogo 651-8585 (JP) Nissan Motor Co., Ltd. Kanagawa 221-0023 (JP) National University Corporation Kumamoto University Kumamoto-shi Kumamoto 860-8555 (JP)

(72) Inventors: NAKATA, Mamoru Kumamoto-shi Kumamoto 861-8028 (JP) YAMADA, Yuuichi Kumamoto-shi Kumamoto 861-8028 (JP) ITAKURA, Koji Kumamoto-shi Kumamoto 861-8028 (JP) KAWAMURA, Yoshihito Kumamoto-shi Kumamoto 861-8028 (JP) YAMASAKI, Michiaki Kumamoto-shi Kumamoto 861-5514 (JP) (74) Representative: Müller-Boré & Partner Patentanwälte  Grafinger Strasse 2 81671 München 81671 München (DE)