(19)

(11)

EP 1 090 149 A1

(12)

(43) Date of publication: 11.04.2001 Bulletin 2001/15 (21) Application number: 99931119.4 (22) Date of filing: 21.06.1999

(51) International Patent Classification (IPC)7: C21D 1/70, C23G 5/00 (86) International application number: PCT/EP9904/283 (87) International publication number: WO 9967/431 (29.12.1999 Gazette 1999/52)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE LI LU MC NL PT SE (30) Priority: 22.06.1998 IT FI980148 (71) Applicant: Muto, Rosario 59100 Prato (IT)	(72) Inventor: Muto, Rosario 59100 Prato (IT) (74) Representative: Gervasi, Gemma, Dr. et al Notarbartolo & Gervasi S.p.A.,Corso di Porta Vittoria, 9 20122 Milano 20122 Milano (IT)