(19)

(11)

EP 1 007 765 A1

(12)

(43) Date of publication: 14.06.2000 Bulletin 2000/24 (21) Application number: 98938773.3 (22) Date of filing: 10.08.1998

(51) International Patent Classification (IPC)7: C25B 15/08, C25B 1/16 (86) International application number: PCT/GB9802/395 (87) International publication number: WO 9907/919 (18.02.1999 Gazette 1999/07)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 08.08.1997 ZA 9707095 (71) Applicant: Inchem (Proprietary) Limited Boksburg 1459 (ZA)	(72) Inventors: GOSS, Desmond, Brian Benoni 1601 (ZA) GOSS, Bowen, Clyde Bryanston 2021 (ZA) ROSELAAR, Hendrik, Albert Sandton 2196 (ZA) (74) Representative: Skone James, Robert Edmund  GILL JENNINGS & EVERYBroadgate House7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)