(19)

(11)

EP 0 174 307 A1

(12)

(43) Date of publication: 19.03.1986 Bulletin 1986/12 (21) Application number: 84901461.0 (22) Date of filing: 21.02.1984

(51) International Patent Classification (IPC):  C02F 1/ 48( . ) (86) International application number: PCT/US1984/000255 (87) International publication number: WO 1985/003649 (29.08.1985 Gazette 1985/19)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (71) Applicants: KRONENBERG, Klaus J. Claremont, CA 91711 (US) BONDE, Robert G. Cariff by the Sea, CA 92007 (US)	(72) Inventors: KRONENBERG, Klaus J. Claremont, CA 91711 (US) BONDE, Robert G. Cariff by the Sea, CA 92007 (US)