(19)

(11)

EP 0 938 654 A1

(12)

(43) Date of publication: 01.09.1999 Bulletin 1999/35 (21) Application number: 97901276.0 (22) Date of filing: 10.01.1997

(51) International Patent Classification (IPC):  G01N 1/ 34( . ) G01N 1/ 40( . ) (86) International application number: PCT/NO1997/000010 (87) International publication number: WO 1997/025606 (17.07.1997 Gazette 1997/31)

(84) Designated Contracting States: AT CH DE ES FR GB IE IT LI NL SE (30) Priority: 11.01.1996 NO 19960000133 (71) Applicants: Rasmussen, Knut E. 1370 Asker (NO) Krogh, Mette 3121 Tonsberg (NO)	(72) Inventors: Rasmussen, Knut E. 1370 Asker (NO) Krogh, Mette 3121 Tonsberg (NO) (74) Representative: Wallin, Bo-Göran, et al  AWAPATENT AB, Box 5117 200 71 Malmö 200 71 Malmö (SE)