(19)

(11)

EP 1 539 328 A1

(12)

(43) Date of publication: 15.06.2005 Bulletin 2005/24 (21) Application number: 03711122.6 (22) Date of filing: 18.02.2003

(51) International Patent Classification (IPC)7: B01D 53/06 (86) International application number: PCT/US2003/004941 (87) International publication number: WO 2004/011126 (05.02.2004 Gazette 2004/06)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR Designated Extension States: AL LT LV MK RO (30) Priority: 26.07.2002 US 398894 P (71) Applicant: Durr Environmental, Inc. Wixom, MI 48393 (US)	(72) Inventor: GUPTA, Ajay Berkeley Heights, NJ 07922 (US) (74) Representative: Samuels, Lucy Alice  Gill Jennings & EveryBroadgate House7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)