(19)

(11)

EP 1 280 964 A1

(12)

(43) Date of publication: 05.02.2003 Bulletin 2003/06 (21) Application number: 01930728.9 (22) Date of filing: 24.04.2001

(51) International Patent Classification (IPC)7: E02B 3/12 (86) International application number: PCT/US0113/259 (87) International publication number: WO 0108/6072 (15.11.2001 Gazette 2001/46)

(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: 09.05.2000 US 566718 23.04.2001 US 840390 (71) Applicant: EPI Environmental Technologies Inc. Conroe, TX 77301 (US)	(72) Inventor: KOZAK, Randall, Jeff Surrey, British Columbia V3W 5M8 (CA) (74) Representative: Holmes, Matthew Peter et al MARKS & CLERK,Sussex House,83-85 Mosley Street Manchester M2 3LG Manchester M2 3LG (GB)