(19)

(11)

EP 1 625 239 A1

(12)

(43) Date of publication: 15.02.2006 Bulletin 2006/07 (21) Application number: 04733383.6 (22) Date of filing: 17.05.2004

(51) International Patent Classification (IPC):  C21C 7/00(1968.09) C21C 7/072(1980.01) C22B 9/10(1968.09) C22B 21/06(1968.09) F27D 3/18(1980.01) C21C 7/04(1968.09) C22B 9/05(1980.01) C22B 21/00(1990.01) F27D 3/16(1968.09) F27D 23/04(1980.01) (86) International application number: PCT/GB2004/002123 (87) International publication number: WO 2004/101830 (25.11.2004 Gazette 2004/48)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: LV (30) Priority: 16.05.2003 GB 0311308 (71) Applicant: EMP Technologies Limited Stretton, Burton on Trent DE13 0BB (GB)	(72) Inventors: PEEL, Alan Michael Hathersage, Hope Valley S32 1AZ (GB) HOWITT, Roger Swadlincote, Derbyshire DE11 9RQ (GB) (74) Representative: Pawlyn, Anthony Neil  Urquhart-Dykes & Lord LLP Tower North Central Merrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)