(19)

(11)

EP 0 481 049 A1

(12)

(43) Date of publication: 22.04.1992 Bulletin 1992/17 (21) Application number: 91908823.0 (22) Date of filing: 29.04.1991

(51) International Patent Classification (IPC):  C02F 1/ 28( . ) D04H 1/ 42( . ) D04H 1/ 544( . ) C02F 1/ 68( . ) D04H 1/ 54( . ) (86) International application number: PCT/EP1991/000818 (87) International publication number: WO 1991/017295 (14.11.1991 Gazette 1991/26)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI NL SE (30) Priority: 07.05.1990 CH 19900001548 17.10.1990 CH 19900003327 (71) Applicant: LEONE, Demetrio CH-8437 Zurzach (CH)	(72) Inventor: LEONE, Demetrio CH-8437 Zurzach (CH) (74) Representative: Breiter, Heinz  Patentanwälte Breiter + Wiedmer AG Postfach 366 CH-8413 Neftenbach-Zürich CH-8413 Neftenbach-Zürich (CH)