(19)

(11)

EP 1 682 686 A1

(12)

(43) Date of publication: 26.07.2006 Bulletin 2006/30 (21) Application number: 04752656.1 (22) Date of filing: 17.05.2004

(51) International Patent Classification (IPC):  C21D 6/00(2006.01) (86) International application number: PCT/US2004/015675 (87) International publication number: WO 2005/047550 (26.05.2005 Gazette 2005/21)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 04.11.2003 WO PCT/US03/35095 (71) Applicant: UEC Technologies LLC Pittsburgh, Pennsylvania 15219 (US)	(72) Inventor: HOYDICK, David, P. Pittsburgh, PA 15227 (US) (74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät  Maximilianstrasse 58 80538 München 80538 München (DE)