(19)

(11)

EP 1 974 074 A2

(12)

(88) Date of publication A3: 21.12.2007 (43) Date of publication: 01.10.2008 Bulletin 2008/40 (21) Application number: 07704917.9 (22) Date of filing: 17.01.2007

(51) International Patent Classification (IPC):  C23F 13/16(2006.01) C23F 13/18(2006.01) C23F 13/10(2006.01) (86) International application number: PCT/GB2007/000128 (87) International publication number: WO 2007/083103 (26.07.2007 Gazette 2007/30)

(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 LV MC NL PL PT RO SE SI SK TR (30) Priority: 20.01.2006 GB 0601164 (71) Applicant: Perrins, Malcolm John 41 Wigmore Close Ipswich IP2 9SW (GB)	(72) Inventor: Perrins, Malcolm John 41 Wigmore Close Ipswich IP2 9SW (GB) (74) Representative: Copp, David Christopher et al Dummett Copp 25 The Square Martlesham Heath Ipswich IP5 3SL Suffolk Martlesham Heath Ipswich IP5 3SL Suffolk (GB)