(19)

(11)

EP 1 247 287 A1

(12)

(43) Date of publication: 09.10.2002 Bulletin 2002/41 (21) Application number: 01904835.4 (22) Date of filing: 11.01.2001

(51) International Patent Classification (IPC)7: H01J 37/32 (86) International application number: PCT/US0100/950 (87) International publication number: WO 0105/2303 (19.07.2001 Gazette 2001/29)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (30) Priority: 11.01.2000 US 481994 (71) Applicant: E.I. DUPONT DE NEMOURS AND COMPANY Wilmington,Delaware 19898 (US)	(72) Inventors: BLOOM, Joy, Sawyer Wilmington, DE 19810 (US) HAYMAN, Andrew, Thawley Middletown, DE 19709 (US) SHIBATA, Michio Landenberg, PA 19350 (US) (74) Representative: Abitz, Walter, Dr.-Ing. et al Patentanwälte Abitz & Partner,Poschingerstrasse 6 81679 München 81679 München (DE)