(19)

(11)

EP 2 712 371 A2

(12)

(88) Date of publication A3: 03.01.2013 (43) Date of publication: 02.04.2014 Bulletin 2014/14 (21) Application number: 12767409.1 (22) Date of filing: 02.04.2012

(51) International Patent Classification (IPC):  C22C 38/48(2006.01) C22C 38/52(2006.01) C22C 33/04(2006.01) C22C 38/58(2006.01) C22C 38/50(2006.01) C21D 8/00(2006.01) (86) International application number: PCT/IB2012/000855 (87) International publication number: WO 2012/137070 (11.10.2012 Gazette 2012/41)

(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: 02.04.2011 CN 201110083730 (71) Applicant: Zhejiang MICROBLOCK Technology Co., Ltd West Lake International Trade Center, Room 416 310000 (CN)	(72) Inventor: Qui, Dexin Hangzhou, Zhejian, 310013 (CN) (74) Representative: Briscoe, Paul Brian  Rouse Patents 11th Floor, Exchange Tower 1 Harbour Exchange Square London E14 9GE London E14 9GE (GB)