(19)

(11)

EP 2 137 556 A1

(12)

(43) Date of publication: 30.12.2009 Bulletin 2009/53 (21) Application number: 08741915.6 (22) Date of filing: 15.04.2008

(51) International Patent Classification (IPC):  G01V 15/00(2006.01) G01N 33/46(2006.01) (86) International application number: PCT/SE2008/050425 (87) International publication number: WO 2008/127192 (23.10.2008 Gazette 2008/43)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR (30) Priority: 16.04.2007 SE 0700938 (71) Applicant: SP Sveriges Tekniska Forskningsinstitut AB 501 15 Boras (SE)	(72) Inventor: UUSIJÄRVI, Richard S-168 51 Bromma (SE) (74) Representative: Axell, Kristina  Albihns AB P.O. Box 5581 114 85 Stockholm 114 85 Stockholm (SE)