(19)

(11)

EP 1 751 398 A1

(12)

(43) Date of publication: 14.02.2007 Bulletin 2007/07 (21) Application number: 05742445.9 (22) Date of filing: 11.05.2005

(51) International Patent Classification (IPC):  F01C 1/20(2006.01) F01C 1/16(2006.01) F01C 11/00(2006.01) (86) International application number: PCT/GB2005/001807 (87) International publication number: WO 2005/108745 (17.11.2005 Gazette 2005/46)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (30) Priority: 11.05.2004 GB 0410491 (71) Applicant: Epicam Limited Linton, Camebridgeshire CB1 6XN (GB)	(72) Inventor: DYE, Anthony Osborne Girton, Cambridgeshire CB3 0NS (GB) (74) Representative: Freeman, Avi  Beck Greener Fulwood House, 12 Fulwood Place, London WC1V 6HR London WC1V 6HR (GB)