(19)

(11)

EP 1 718 805 A1

(12)

(43) Date of publication: 08.11.2006 Bulletin 2006/45 (21) Application number: 05713522.0 (22) Date of filing: 11.02.2005

(51) International Patent Classification (IPC):  E01C 11/14(2006.01) (86) International application number: PCT/US2005/004660 (87) International publication number: WO 2005/080687 (01.09.2005 Gazette 2005/35)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 12.02.2004 US 544275 P (71) Applicant: Arizona Board of Regents on behalf of the University of Arizona Tucson, AZ 85721-0158 (US)	(72) Inventor: SAADATMANESH, Hamid Tucson, AR 85718 (US) (74) Representative: Johnstone, Helen Margaret et al Eric Potter Clarkson LLP Park View House 58 The Ropewalk Nottingham NG1 5DD Nottingham NG1 5DD (GB)