(19)

(11)

EP 0 819 243 A1

(12)

(43) Date of publication: 21.01.1998 Bulletin 1998/04 (21) Application number: 96910237.0 (22) Date of filing: 01.04.1996

(51) International Patent Classification (IPC):  G01N 21/ 17( . ) (86) International application number: PCT/NO1996/000074 (87) International publication number: WO 1996/031765 (10.10.1996 Gazette 1996/45)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 05.04.1995 NO 19950001334 (71) Applicant: Nyfotek A/S 0314 Oslo (NO)	(72) Inventors: FERBER, Alain N-1344 Haslum (NO) BERNSTEIN, Ralph, W. N-1340 Bekkestua (NO) (74) Representative: Hitchcock, Esmond Antony  Lloyd Wise, Tregear & Co., Commonwealth House, 1-19 New Oxford Street London WC1A 1LW London WC1A 1LW (GB)