(19)

(11)

EP 0 683 812 A1

(12)

(43) Date of publication: 29.11.1995 Bulletin 1995/48 (21) Application number: 94906311.0 (22) Date of filing: 11.02.1994

(51) International Patent Classification (IPC):  C11D 3/ 18( . ) C11D 3/ 20( . ) (86) International application number: PCT/GB1994/000287 (87) International publication number: WO 1994/018300 (18.08.1994 Gazette 1994/19)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE (30) Priority: 12.02.1993 GB 19930002869 (71) Applicant: ROGERS, Neil Preston, Lancashire PR1 9NP (GB)	(72) Inventors: ROGERS, Neil Lancashire PR1 9NP (GB) WITHERS, Paul Bury Greater Manchester BL9 9SF (GB) (74) Representative: Atkinson, Peter Birch, et al  MARKS & CLERK, Sussex House, 83-85 Mosley Street Manchester M2 3LG Manchester M2 3LG (GB)