(19)

(11)

EP 1 425 483 A2

(12)

(88) Date of publication A3: 01.04.2004 (43) Date of publication: 09.06.2004 Bulletin 2004/24 (21) Application number: 02756130.7 (22) Date of filing: 06.06.2002

(51) International Patent Classification (IPC)7: E04C 2/54 (86) International application number: PCT/US2002/017942 (87) International publication number: WO 2002/098644 (12.12.2002 Gazette 2002/50)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 06.06.2001 US 296186 P (71) Applicant: UNIVERSITY OF VIRGINIA PATENT FOUNDATION Charlottesville,Virginia 22903 (US)	(72) Inventors: SYPECK, David, J. Charlottesville, VA 22911 (US) WADLEY, Haydn, N., G. Keswick, VA 22947 (US) (74) Representative: Riederer Freiherr von Paar zu Schönau, Anton  Boehmert & BoehmertKanzlei LandshutPostfach 26 64 84010 Landshut 84010 Landshut (DE)