(19)

(11)

EP 1 334 073 A2

(12)

(88) Date of publication A3: 01.08.2002 (43) Date of publication: 13.08.2003 Bulletin 2003/33 (21) Application number: 01980658.7 (22) Date of filing: 29.10.2001

(51) International Patent Classification (IPC)7: C02F 1/46, C02F 1/44, C02F 3/12 (86) International application number: PCT/GB0104/809 (87) International publication number: WO 0203/6499 (10.05.2002 Gazette 2002/19)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 01.11.2000 GB 0026630 11.04.2001 GB 0109085 (71) Applicants: Pratt, Charles Michael Backwell,Somerset BS48 3HG (GB) Baker, Ian Clutton,Bristol BS39 5RE (GB)	(72) Inventors: Pratt, Charles Michael Backwell,Somerset BS48 3HG (GB) Baker, Ian Clutton,Bristol BS39 5RE (GB) (74) Representative: Pearson, James Ginn et al Abel & Imray,20 Red Lion Street London WC1R 4PQ London WC1R 4PQ (GB)