(19)

(11)

EP 1 387 724 A1

(12)

(43) Date of publication: 11.02.2004 Bulletin 2004/07 (21) Application number: 02726767.3 (22) Date of filing: 17.04.2002

(51) International Patent Classification (IPC)7: B01D 59/44, H01J 49/00 (86) International application number: PCT/US2002/012210 (87) International publication number: WO 2002/083276 (24.10.2002 Gazette 2002/43)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 17.04.2001 US 836495 07.01.2002 US 40947 12.04.2002 US 123030 (71) Applicant: The Charles Stark Draper Laboratory, INC. Cambridge, MA 02138 (US)	(72) Inventors: MILLER, Raanan, A. Brookline, MA 02467 (US) NAZAROV, Erkinjon, G. Las Cruces, NM 88001 (US) EICEMAN, Gary, A. Las Cruces, NM 88005 (US) KRYLOV, Evgeny Las Cruces, NM 88001 (US) (74) Representative: Greenwood, John David  Graham Watt & Co.,St. Botholp's House7-9 St. Botholp's Road Sevenoaks,Kent TN13 3AJ Sevenoaks,Kent TN13 3AJ (GB)