(19)

(11)

EP 1 056 981 A1

(12)

(43) Date of publication: 06.12.2000 Bulletin 2000/49 (21) Application number: 99904893.7 (22) Date of filing: 18.02.1999

(51) International Patent Classification (IPC)7: F28D 15/02, B32B 31/00 // (B32B31/02, H05K7:20, H01L23:427) (86) International application number: PCT/FI9900/131 (87) International publication number: WO 9942/781 (26.08.1999 Gazette 1999/34)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 19.02.1998 FI 980381 12.06.1998 FI 981374 (71) Applicant: Nokia Networks Oy 02150 Espoo (FI)	(72) Inventors: KABRELL, Carl, Axel, Ingemar FIN-00430 Helsinki (FI) LEHTINIEMI, Reijo FIN-00240 Helsinki (FI) (74) Representative: Peltonen, Antti Sakari et al Kolster Oy Ab,Iso Roobertinkatu 23,P.O. Box 148 00121 Helsinki 00121 Helsinki (FI)