(19)

(11)

EP 1 954 378 A2

(12)

(88) Date of publication A3: 19.07.2007 (43) Date of publication: 13.08.2008 Bulletin 2008/33 (21) Application number: 06820343.9 (22) Date of filing: 23.11.2006

(51) International Patent Classification (IPC):  B01D 53/10(2006.01) B01D 53/83(2006.01) (86) International application number: PCT/GB2006/004372 (87) International publication number: WO 2007/060429 (31.05.2007 Gazette 2007/22)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 24.11.2005 GB 0523889 (71) Applicant: Rowe Technology Limited Fishergate York YO10 4UA (GB)	(72) Inventor: WEIR, Robert McIntyre Fishergate, York YO10 4UA (GB) (74) Representative: Harrison, Paul Richard et al Novagraaf Patents Limited The Crescent 54 Blossom Street York YO24 1AP 54 Blossom Street York YO24 1AP (GB)