(19)

(11)

EP 1 796 844 A1

(12)

(43) Date of publication: 20.06.2007 Bulletin 2007/25 (21) Application number: 05764179.7 (22) Date of filing: 03.08.2005

(51) International Patent Classification (IPC):  B04B 1/12(2006.01) B04B 5/00(2006.01) B04B 7/08(2006.01) (86) International application number: PCT/AU2005/001151 (87) International publication number: WO 2006/012687 (09.02.2006 Gazette 2006/06)

(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: 05.08.2004 AU 2004904385 (71) Applicant: Filtra Limited North Sydney NSW 2060 (AU)

(72) Inventors: EDMUNDS, Edwin Davidson, New South Wales 2085 (AU) GARMAN, David, Edward, John Lindfield, New South Wales 2070 (AU) MEYER, Allan Cherrybrook, New South Wales 2126 (AU) BLACK, Lincoln North Parramatta, New South Wales 2151 (AU) SMAIR, Hayel Carlingford, New South Wales 2118 (AU) (74) Representative: Ribeiro, James Michael et al Withers & Rogers LLP Goldings House 2 Hays Lane London SE1 2HW London SE1 2HW (GB)