(19)

(11)

EP 0 467 916 A1

(12)

(43) Date of publication: 29.01.1992 Bulletin 1992/05 (21) Application number: 90905606.0 (22) Date of filing: 05.04.1990

(51) International Patent Classification (IPC):  A61K 9/ 72( . ) A61K 31/ 415( . ) A61K 9/ 12( . ) A61P 31/ 04( . ) (86) International application number: PCT/GB1990/000513 (87) International publication number: WO 1990/011754 (18.10.1990 Gazette 1990/24)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 12.04.1989 GB 19890008250 (71) Applicant: FISONS plc Ipswich Suffolk IP1 1QH (GB)	(72) Inventor: ORR, Thomas, Samuel, Campbell Crespina Leicestershire LE14 4AJ (GB) (74) Representative: Wright, Robert Gordon McRae  FISONS plc 12 Derby Road Loughborough Leicestershire LE11 0BB Loughborough Leicestershire LE11 0BB (GB)