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(11)

EP 1 043 927 A1

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(43) Date of publication: 18.10.2000 Bulletin 2000/42 (21) Application number: 98964873.8 (22) Date of filing: 23.12.1998

(51) International Patent Classification (IPC)7: A01N 25/02, A01N 25/30, A01N 57/16, A01N 47/38, A01N 43/40, A01N 33/22 // (A01N57/16, 25:30), A01N25:02,(A01N47/38, 25:30), A01N25:02,(A01N43/40, 25:30), A01N25:02,(A01N33/22, 25:30), A01N25:02 (86) International application number: PCT/US9827/358 (87) International publication number: WO 9933/340 (08.07.1999 Gazette 1999/27)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 30.12.1997 US 70101 P 16.12.1998 US 212994 (71) Applicant: Aquatrols Holding Co., Inc. Wilmington, DE 19810 (US)	(72) Inventors: KOSTKA, Stanley, J. Cherry Hill, NJ 08034 (US) PAN, Rennan Plainsboro, NJ 08536 (US) (74) Representative: Kyle, Diana  Elkington and FifeProspect House8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)