(19)

(11)

EP 0 820 531 A1

(12)

(43) Date of publication: 28.01.1998 Bulletin 1998/05 (21) Application number: 96908291.0 (22) Date of filing: 03.04.1996

(51) International Patent Classification (IPC):  C22B 1/ 243( . ) C22B 7/ 02( . ) C22B 1/ 245( . ) (86) International application number: PCT/GB1996/000821 (87) International publication number: WO 1996/031630 (10.10.1996 Gazette 1996/45)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV SI (30) Priority: 04.04.1995 DE 19951012560 21.07.1995 DE 19951026687 06.10.1995 DE 19951037283 (71) Applicant: HECKETT MULTISERV PLC London W6 8DW (GB)	(72) Inventor: OSING, Dirk D-40667 Meerbusch (DE) (74) Representative: Shaw, Laurence, et al  5th Floor, Metropolitan House, 1 Hagley Road, Edgbaston Birmingham B16 8TG Birmingham B16 8TG (GB)