(19)

(11)

EP 1 095 121 A1

(12)

(43) Date of publication: 02.05.2001 Bulletin 2001/18 (21) Application number: 99915880.1 (22) Date of filing: 08.04.1999

(51) International Patent Classification (IPC)7: C10L 1/10, C10L 1/32, B01F 17/00, B01F 17/22, B01F 17/42, B01F 3/08 (86) International application number: PCT/GB9901/073 (87) International publication number: WO 9952/994 (21.10.1999 Gazette 1999/42)

(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: 09.04.1998 GB 9807792 (71) Applicant: Coval Technologies Limited East Peckham,Tonbridge,Kent TN12 5AY (GB)	(72) Inventors: STREET, Peter Tonbridge,Kent TN12 5AY (GB) THORLEY, David Hadley Wood,Barnet,Herts EN4 0EQ (GB) (74) Representative: Fisher, Adrian John et al CARPMAELS & RANSFORD43 Bloomsbury Square London WC1A 2RA London WC1A 2RA (GB)