(19)

(11)

EP 0 951 451 A1

(12)

(43) Date of publication: 27.10.1999 Bulletin 1999/43 (21) Application number: 96939629.0 (22) Date of filing: 12.11.1996

(51) International Patent Classification (IPC):  C02F 3/ 04( . ) C02F 3/ 28( . ) C02F 3/ 06( . ) (86) International application number: PCT/US1996/018022 (87) International publication number: WO 1998/021150 (22.05.1998 Gazette 1998/20)

(84) Designated Contracting States: DE DK ES FR GB IE IT SE (71) Applicant: Stuth, William L. Maple Valley, WA 98038-0950 (US)	(72) Inventor: Stuth, William L. Maple Valley, WA 98038-0950 (US) (74) Representative: Jehan, Robert, et al  Williams, Powell & Associates, 4 St Paul's Churchyard London EC4M 8AY London EC4M 8AY (GB)