(19)

(11)

EP 1 255 903 A1

(12)

(43) Date of publication: 13.11.2002 Bulletin 2002/46 (21) Application number: 01902559.2 (22) Date of filing: 05.02.2001

(51) International Patent Classification (IPC)7: E04H 3/12, E04C 3/40, E04B 7/16, E04C 3/00 (86) International application number: PCT/GB0100/460 (87) International publication number: WO 0105/7343 (09.08.2001 Gazette 2001/32)

(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: 03.02.2000 GB 0002519 (71) Applicant: University of Dundee Dundee DD1 4HN (GB)	(72) Inventors: BURFORD, Neil, Keith Dundee DD5 3EN (GB) SMITH, Fraser, William Dundee DD4 0QZ (GB) (74) Representative: Chapman, Paul Gilmour et al Cruikshank & Fairweather,19 Royal Exchange Square Glasgow G1 3AE Glasgow G1 3AE (GB)