(19)

(11)

EP 1 202 797 A1

(12)

(43) Date of publication: 08.05.2002 Bulletin 2002/19 (21) Application number: 00930911.3 (22) Date of filing: 26.05.2000

(51) International Patent Classification (IPC)7: B01J 20/26, B01J 20/12, A61L 15/18, B01J 20/30, A61L 15/00, E02D 19/18, E02D 31/00 (86) International application number: PCT/CA0000/595 (87) International publication number: WO 0072/958 (07.12.2000 Gazette 2000/49)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 26.05.1999 CA 2272965 (71) Applicant: Alberta Research Council, Inc. Edmonton,Alberta T6N 1E4 (CA)	(72) Inventors: PAYZANT, John Edmonton, Alberta T6E 2J4 (CA) ZHOU, Zhihong Edmonton, Alberta T6R 2C5 (CA) (74) Representative: HOFFMANN - EITLE  Patent- und RechtsanwälteArabellastrasse 4 81925 München 81925 München (DE)