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(11)

EP 1 287 169 A1

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(43) Date of publication: 05.03.2003 Bulletin 2003/10 (21) Application number: 00930801.6 (22) Date of filing: 17.05.2000

(51) International Patent Classification (IPC)7: C21C 5/46, B22D 43/00, F27D 3/15 (86) International application number: PCT/US0013/621 (87) International publication number: WO 0108/8209 (22.11.2001 Gazette 2001/47)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (71) Applicant: Tetron, Inc. Farmington Hills, MI 48331-2952 (US)	(72) Inventors: KOFFRON, Robert, J. Farmington Hills, MI 48331-2952 (US) JACOBS, Ross, A. Snowmass, CO 81654 (US) (74) Representative: Lamb, Richard Andrew et al Urquhart-Dykes & Lord,New Priestgate House,57 Priestgate Peterborough,Cambs. PE1 1JX Peterborough,Cambs. PE1 1JX (GB)