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(11)

EP 1 663 456 A1

(12)

(43) Date of publication: 07.06.2006 Bulletin 2006/23 (21) Application number: 04757386.0 (22) Date of filing: 28.07.2004

(51) International Patent Classification (IPC):  B01D 53/60(1995.01) C01G 45/00(1968.09) A62B 7/10(1968.09) (86) International application number: PCT/US2004/024497 (87) International publication number: WO 2005/011847 (10.02.2005 Gazette 2005/06)

(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 PL PT RO SE SI SK TR (30) Priority: 31.07.2003 US 491653 P 22.01.2004 US 538644 P 23.01.2004 US 538968 P 28.01.2004 US 767460 02.03.2004 US 549255 P (71) Applicant: Enviroscrub Technologies Corporation Minneapolis, MN 55431 (US)	(72) Inventors: BOREN, Richard, M. Bakersfield, CA 93312 (US) HAMMEL, Charles, F. Escondido, CA 92027 (US) (74) Representative: Kirschner, Klaus Dieter  Böck Tappe Kirschner Sollner Strasse 38 D-81479 München D-81479 München (DE)