(19)

(11)

EP 0 724 474 A1

(12)

(43) Date of publication: 07.08.1996 Bulletin 1996/32 (21) Application number: 95930851.0 (22) Date of filing: 16.08.1995

(51) International Patent Classification (IPC):  B01D 53/ 86( . ) F01N 3/ 28( . ) (86) International application number: PCT/US1995/010492 (87) International publication number: WO 1996/005906 (29.02.1996 Gazette 1996/10)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 18.08.1994 US 19940292362 (71) Applicant: PRECISION COMBUSTION, INC. New Haven, Connecticut 06511 (US)	(72) Inventors: PFEFFERLE, William, C. Madison, CT 06443 (US) ROYCHOUDHURY, Subir North Branford, CT 04471 (US) (74) Representative: Boeters, Hans Dietrich, Dr.  Patentanwälte Boeters & Bauer, Bereiteranger 15 81541 München 81541 München (DE)