(19)

(11)

EP 2 131 937 A2

(12)

(88) Date of publication A3: 31.12.2008 (43) Date of publication: 16.12.2009 Bulletin 2009/51 (21) Application number: 08799608.8 (22) Date of filing: 24.03.2008

(51) International Patent Classification (IPC):  B01D 15/00(2006.01) (86) International application number: PCT/US2008/058066 (87) International publication number: WO 2008/116225 (25.09.2008 Gazette 2008/39)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR (30) Priority: 22.03.2007 US 896479 P (71) Applicant: Argylla Technologies, LLC Tucson, AZ 85726 (US)	(72) Inventors: UTERMOHLEN, Joseph, G. Tucson, AZ 85719 (US) HOGAN, Michael, E. Tucson, AZ 85710 (US) DIGGINS, Paul, E. Tucson, AZ 85710 (US) (74) Representative: Clegg, Richard Ian  Mewburn Ellis LLP 33 Gutter Lane London EC2V 8AS London EC2V 8AS (GB)