(19)

(11)

EP 1 960 558 A2

(12)

(88) Date of publication A3: 03.07.2008 (43) Date of publication: 27.08.2008 Bulletin 2008/35 (21) Application number: 06851783.8 (22) Date of filing: 08.12.2006

(51) International Patent Classification (IPC):  C21D 1/04(2006.01) C21D 1/10(2006.01) (86) International application number: PCT/US2006/046774 (87) International publication number: WO 2008/048307 (24.04.2008 Gazette 2008/17)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 08.12.2005 US 748473 P 07.12.2006 US 567956 (71) Applicant: Noble Advanced Technologies, Inc. Warren, MI 48093 (US)	(72) Inventor: MACHROWICZ, Tad Ortonville, MI (US) (74) Representative: HOEIBERG A/S  Store Kongensgade 59B 1264 Copenhagen K. 1264 Copenhagen K. (DK)