(19)

(11)

EP 2 252 716 A2

(12)

(88) Date of publication A3: 30.09.2010 (43) Date of publication: 24.11.2010 Bulletin 2010/47 (21) Application number: 09730142.8 (22) Date of filing: 16.01.2009

(51) International Patent Classification (IPC):  C22C 21/10(2006.01) C22F 1/053(2006.01) (86) International application number: PCT/US2009/031251 (87) International publication number: WO 2009/126347 (15.10.2009 Gazette 2009/42)

(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 MK MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 16.01.2008 US 21503 P (71) Applicant: Questek Innovations LLC Evanston, IL 60201 (US)	(72) Inventors: MISRA, Abhijeet Evanston IL 60201 (US) KUEHMANN, Charles Deerfield IL 60015 (US) JOU, Herng-jeng Wilmette IL 60091 (US) (74) Representative: McCartney, Jonathan William  Haseltine Lake LLP Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)