(19)

(11)

EP 1 384 060 A2

(12)

(88) Date of publication A3: 10.04.2003 (43) Date of publication: 28.01.2004 Bulletin 2004/05 (21) Application number: 02731510.0 (22) Date of filing: 25.04.2002

(51) International Patent Classification (IPC)7: G01N 15/08 (86) International application number: PCT/US2002/013126 (87) International publication number: WO 2002/088675 (07.11.2002 Gazette 2002/45)

(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: 27.04.2001 US 844421 07.11.2001 US 76797 (71) Applicant: UOP LLC Des Plaines, IL 60017-5017 (US)

(72) Inventors: SWENSON, Lasalle, R. Chicago, IL 60655 (US) BRANDVOLD, Timothy, A.,UOP LLC Des Plaines, IL 60017-5017 (US) MCCALL, Michael, J.,UOP LLC Des Plaines, IL 60017-5017 (US) VANDEN BUSSCHE, Kurt, M.,UOP LLC Des Plaines, IL 60017-5017 (US) WILLIS, Richard, R.,UOP LLC Des Plaines, IL 60017-5017 (US) (74) Representative: Hayes, Adrian Chetwynd et al Boult Wade Tennant,Verulam Gardens70 Gray's Inn Road London WC1X 8BT London WC1X 8BT (GB)