(19)

(11)

EP 0 591 233 A1

(12)

(43) Date of publication: 13.04.1994 Bulletin 1994/15 (21) Application number: 92909814.0 (22) Date of filing: 18.05.1992

(51) International Patent Classification (IPC):  A61L 27/ 00( . ) C08G 65/ 26( . ) C08J 7/ 04( . ) G02B 1/ 04( . ) A61L 27/ 34( . ) C08G 65/ 329( . ) C09D 171/ 02( . ) G02C 7/ 04( . ) (86) International application number: PCT/GB1992/000901 (87) International publication number: WO 1993/000391 (07.01.1993 Gazette 1993/02)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 27.06.1991 GB 19910013875 (71) Applicant: BIOINTERACTIONS LIMITED University of Reading, Reading RG6 2BX (GB)	(72) Inventors: LUTHRA, Ajay Kumar, Innovation Centre Reading RG6 2BX (GB) SANDHU, Shivpal Singh, Innovation Centre Reading RG6 2BX (GB) (74) Representative: Wolff, Francis Paul  Wolff & Lunt 1 Richfield Place Richfield Avenue Reading Berkshire RG1 8EQ Reading Berkshire RG1 8EQ (GB)