(19)

(11)

EP 1 546 485 A2

(12)

(88) Date of publication A3: 24.06.2004 (43) Date of publication: 29.06.2005 Bulletin 2005/26 (21) Application number: 03751990.7 (22) Date of filing: 03.09.2003

(51) International Patent Classification (IPC)7: E04C 3/00 (86) International application number: PCT/US2003/027637 (87) International publication number: WO 2004/022870 (18.03.2004 Gazette 2004/12)

(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 Designated Extension States: AL LT LV MK (30) Priority: 04.09.2002 US 408310 P (71) Applicant: Brigham Young University Provo,Utah 84602-1231 (US)	(72) Inventor: JENSEN, David Mapleton, UT 84664 (US) (74) Representative: Thomson, Paul Anthony  Potts, Kerr & Co.15, Hamilton Square BirkenheadMerseyside CH41 6BR BirkenheadMerseyside CH41 6BR (GB)