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EP 2 809 835 A1

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(43) Date of publication: 10.12.2014 Bulletin 2014/50 (21) Application number: 12780602.4 (22) Date of filing: 11.10.2012

(51) International Patent Classification (IPC):  C25F 7/02(2006.01) C25F 5/00(2006.01) (86) International application number: PCT/US2012/059677 (87) International publication number: WO 2013/066586 (10.05.2013 Gazette 2013/19)

(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 Designated Extension States: BA ME (30) Priority: 31.10.2011 CN 201110337199 (71) Applicant: General Electric Company Schenectady, NY 12345 (US)

(72) Inventors: XU, Wenlong Niskayuna, NY 12309 (US) WU, Yingna Niskayuna, NY 12309 (US) HU, Dengji Niskayuna, NY 12309 (US) XU, Huiyu Niskayuna, NY 12309 (US) WEI, Bin Niskayuna, NY 12309 (US) KOOL, Lawrence, Bernard Niskayuna, NY 12309 (US) PENG, Zhixue Niskayuna, NY 12309 (US) MANTKOWSKI, Thomas, Edward Niskayuna, NY 12309 (US) MEYER, Mark, Kevin Niskayuna, NY 12309 (US) (74) Representative: Williams, Andrew Richard  GPO Europe GE International Inc. The Ark 201 Talgarth Road Hammersmith London W6 8BJ London W6 8BJ (GB)