(19)

(11)

EP 1 178 728 A1

(12)

(43) Date of publication: 13.02.2002 Bulletin 2002/07 (21) Application number: 00926613.1 (22) Date of filing: 08.05.2000

(51) International Patent Classification (IPC)7: A01N 37/36 // A01N37:36, A01N37:02 (86) International application number: PCT/CA0000/531 (87) International publication number: WO 0069/263 (23.11.2000 Gazette 2000/47)

(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: 14.05.1999 US 134162 P (71) Applicant: Ecoval Corporation Elmira, Ontario N3B 1B9 (CA)	(72) Inventors: LOJEK, John S. Elmira, Ontario N3B 1B9 (CA) LOJEK, Margaret Anne Elmira, Ontario N3B 1B9 (CA) (74) Representative: Müller, Frank Peter, Dipl.-Ing.  Müller, Schupfner & Gauger Patentanwälte Postfach 10 11 61 80085 München 80085 München (DE)