(19)

(11)

EP 0 847 453 A1

(12)

(43) Date of publication: 17.06.1998 Bulletin 1998/25 (21) Application number: 96929284.0 (22) Date of filing: 20.08.1996

(51) International Patent Classification (IPC):  C14C 9/ 02( . ) (86) International application number: PCT/EP1996/003656 (87) International publication number: WO 1997/008346 (06.03.1997 Gazette 1997/11)

(84) Designated Contracting States: AT BE DE ES FR GB NL PT (30) Priority: 30.08.1995 IT 1995MI01830 (71) Applicant: Tempesti S.P.A. 56024 Ponte a Egola (IT)	(72) Inventor: TEMPESTI, Giovanni I-56024 Ponte a Egola (IT) (74) Representative: Ferreccio, Rinaldo, et al  Jacobacci & Perani S.p.A., Via Visconti di Modrone 7 20122 Milano 20122 Milano (IT)