(19)

(11)

EP 0 569 415 A1

(12)

(43) Date of publication: 18.11.1993 Bulletin 1993/46 (21) Application number: 92903484.0 (22) Date of filing: 28.01.1992

(51) International Patent Classification (IPC):  A61K 31/ 565( . ) (86) International application number: PCT/EP1992/000174 (87) International publication number: WO 1992/013538 (20.08.1992 Gazette 1992/22)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 01.02.1991 IT 1991MI00025 (71) Applicant: CHIESI FARMACEUTICI S.p.A. I-43100 Parma (IT)	(72) Inventor: CHIESI, Paolo I-43100 Parma (IT) (74) Representative: Minoja, Fabrizio  Studio Consulenza Brevettuale, Via Rossini, 8 I-20122 Milano I-20122 Milano (IT)