(19)

(11)

EP 0 719 355 A1

(12)

(43) Date of publication: 03.07.1996 Bulletin 1996/27 (21) Application number: 94924925.0 (22) Date of filing: 24.08.1994

(51) International Patent Classification (IPC):  D04H 1/ 44( . ) D04H 3/ 14( . ) D04H 1/ 54( . ) (86) International application number: PCT/GB1994/001856 (87) International publication number: WO 1995/006769 (09.03.1995 Gazette 1995/11)

(84) Designated Contracting States: BE CH DE ES FR GB IT LI NL (30) Priority: 28.08.1993 GB 19930017946 (71) Applicant: UNIVERSITY OF MANCHESTER Institute of Science and Technology Manchester M60 1QD (GB)	(72) Inventors: FOSTER, Peter, University of Manchester Manchester M6O 1QD (GB) PORAT, Itzchak, University of Manchester Manchester M6O 1QD (GB) (74) Representative: McNeight, David Leslie, et al  McNeight & Lawrence Regent House Heaton Lane Stockport Cheshire SK4 1BS Stockport Cheshire SK4 1BS (GB)