(19)

(11)

EP 1 807 574 A1

(12)

(43) Date of publication: 18.07.2007 Bulletin 2007/29 (21) Application number: 05791374.1 (22) Date of filing: 27.09.2005

(51) International Patent Classification (IPC):  E03F 5/16(2006.01) C02F 1/40(2006.01) (86) International application number: PCT/GB2005/003727 (87) International publication number: WO 2006/035224 (06.04.2006 Gazette 2006/14)

(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: 27.09.2004 GB 0421320 07.01.2005 GB 0500254 (71) Applicant: Invert Group Limited Newcastle-upon-Tyne NE1 3DY (GB)	(72) Inventor: ARMSTRONG, Damone Newcastle-upon-Tyne NE1 3DY (GB) (74) Representative: Elsworth, Dominic Stephen  Hargreaves Elsworth 6 Charlotte Square Newcastle-upon-Tyne NE1 4XF Newcastle-upon-Tyne NE1 4XF (GB)