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(11)

EP 1 668 334 A1

(12)

(43) Date of publication: 14.06.2006 Bulletin 2006/24 (21) Application number: 03770559.7 (22) Date of filing: 30.09.2003

(51) International Patent Classification (IPC):  G01N 1/00(1968.09) G01N 21/55(1980.01) G01B 9/02(1968.09) (86) International application number: PCT/US2003/030694 (87) International publication number: WO 2005/040760 (06.05.2005 Gazette 2005/18)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR (71) Applicant: The Arizona Board of Regents on behalf of the University of Arizona Tucson, AZ 85721-0158 (US)	(72) Inventors: SALAMON, Zdzislaw Tucson, AZ 85743 (US) TOLLIN, Gordon Tucson, AZ 85742 (US) (74) Representative: Johnstone, Helen Margaret  Eric Potter Clarkson LLP Park View House 58 The Ropewalk Nottingham NG1 5DD Nottingham NG1 5DD (GB)