(19)

(11)

EP 1 149 392 A1

(12)

(43) Date of publication: 31.10.2001 Bulletin 2001/44 (21) Application number: 99960012.5 (22) Date of filing: 30.11.1999

(51) International Patent Classification (IPC)7: H01G 9/20, H01L 31/052 (86) International application number: PCT/NL9900/731 (87) International publication number: WO 0036/618 (22.06.2000 Gazette 2000/25)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 11.12.1998 NL 1010787 (71) Applicant: Stichting EnergieonderzoekCentrum Nederland(ECN) 1755 ZG Petten (NL)	(72) Inventors: WIENKE-ULLRICH, Jeannette, Angela NL-1827 LR Alkmaar (NL) SPÄTH, Martin NL-1722 GD Zuid-Scharwoude (NL) (74) Representative: Dokter, Hendrik Daniel  Octrooibureau Dokter,P.O. Box 657 7300 AR Apeldoorn 7300 AR Apeldoorn (NL)