(19)

(11)

EP 1 735 254 A1

(12)

(43) Date of publication: 27.12.2006 Bulletin 2006/52 (21) Application number: 05732068.1 (22) Date of filing: 07.04.2005

(51) International Patent Classification (IPC):  C06B 31/28(2006.01) C01C 1/18(2006.01) B01J 2/04(2006.01) (86) International application number: PCT/CA2005/000528 (87) International publication number: WO 2005/097710 (20.10.2005 Gazette 2005/42)

(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 Designated Extension States: AL BA HR LV MK YU (30) Priority: 08.04.2004 CA 2464278 (71) Applicant: Nexco Inc. North Bay, Ontario P1A 4K6 (CA)	(72) Inventor: PRESTON, Christopher North Bay, Ontario P1B 4S7 (CA) (74) Representative: Thomson, James B.  Frank B. Dehn & Co. St Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)