(19)

(11)

EP 2 117 668 A2

(12)

(88) Date of publication A3: 10.07.2008 (43) Date of publication: 18.11.2009 Bulletin 2009/47 (21) Application number: 07848398.9 (22) Date of filing: 26.11.2007

(51) International Patent Classification (IPC):  B01D 19/00(2006.01) (86) International application number: PCT/GB2007/004506 (87) International publication number: WO 2008/062218 (29.05.2008 Gazette 2008/22)

(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 MT NL PL PT RO SE SI SK TR (30) Priority: 24.11.2006 GB 0623469 (71) Applicant: Pursuit Dynamics PLC. Hinchingbrooke Business Park Huntingdon Cambridgeshire PE29 6HB (GB)	(72) Inventors: FENTON, Marcus Brian Mayhall Cambridgeshire PE19 8BP (GB) DAWSON, Stevenson Alan Peter Cambridge CB1 8RD (GB) (74) Representative: Hendry, Niall James  Murgitroyd & Company Scotland House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)