(19)

(11)

EP 2 361 132 A2

(12)

(88) Date of publication A3: 29.07.2010 (43) Date of publication: 31.08.2011 Bulletin 2011/35 (21) Application number: 09823862.9 (22) Date of filing: 30.10.2009

(51) International Patent Classification (IPC):  B01D 35/30(2006.01) (86) International application number: PCT/KR2009/006354 (87) International publication number: WO 2010/050782 (06.05.2010 Gazette 2010/18)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 31.10.2008 KR 20080108081 (71) Applicant: Woongjin Coway Co., Ltd. Choongcheongnam-do 314-895 (KR)	(72) Inventor: LEE, In-Tak Gongjoo Choongcheongnam-do 314-895 (KR) (74) Representative: Larcher, Dominique  Cabinet Vidon, 16 B, rue Jouanet, BP 90333 Technopole Atalante 35703 Rennes Cedex 7 35703 Rennes Cedex 7 (FR)