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(11)

EP 0 743 927 A1

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(43) Date of publication: 27.11.1996 Bulletin 1996/48 (21) Application number: 95902392.0 (22) Date of filing: 17.10.1994

(51) International Patent Classification (IPC):  C02F 3/ 04( . ) C02F 3/ 30( . ) C02F 3/ 08( . ) (86) International application number: PCT/US1994/011796 (87) International publication number: WO 1996/011884 (25.04.1996 Gazette 1996/18)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: POLYTECHNIC UNIVERSITY Brooklyn, New York 11201-2990 (US)	(72) Inventors: MOLOF, Alan, H. New City, NY 10956 (US) YUN, Zuwhan Seoul 777-16 (KR) KIM, Sungtai Seoul (KR) (74) Representative: VOSSIUS & PARTNER  Postfach 86 07 67 81634 München 81634 München (DE)