(19)

(11)

EP 1 350 090 A1

(12)

(43) Date of publication: 08.10.2003 Bulletin 2003/41 (21) Application number: 01271049.7 (22) Date of filing: 07.12.2001

(51) International Patent Classification (IPC)7: G01N 27/407 (86) International application number: PCT/US0147/465 (87) International publication number: WO 0300/8957 (30.01.2003 Gazette 2003/05)

(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: 07.12.2000 US 254081 P (71) Applicant: AEP EmTech LLC Columbus, Ohio 43215-2373 (US)	(72) Inventor: LAWLESS, William, N. Westerville, OH 43081 (US) (74) Representative: Boyce, Conor et al F. R. Kelly & Co.,27 Clyde Road,Ballsbridge Dublin 4 Dublin 4 (IE)