(19)

(11)

EP 1 113 994 A1

(12)

(43) Date of publication: 11.07.2001 Bulletin 2001/28 (21) Application number: 99942145.6 (22) Date of filing: 12.08.1999

(51) International Patent Classification (IPC)7: C02F 1/32 (86) International application number: PCT/US9918/355 (87) International publication number: WO 0009/450 (24.02.2000 Gazette 2000/08)

(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: 12.08.1998 US 96260 P (71) Applicant: Lifschitz, Eric L. San Francisco, CA 94109 (US)	(72) Inventor: Lifschitz, Eric L. San Francisco, CA 94109 (US) (74) Representative: Bryer, Kenneth Robert et al K.R. Bryer & Co.7 Gay Street Bath BA1 2PH Bath BA1 2PH (GB)