(19)

(11)

EP 1 059 982 A1

(12)

(43) Date of publication: 20.12.2000 Bulletin 2000/51 (21) Application number: 99908063.3 (22) Date of filing: 04.03.1999

(51) International Patent Classification (IPC)7: B01D 27/08 (86) International application number: PCT/SE9900/330 (87) International publication number: WO 9944/715 (10.09.1999 Gazette 1999/36)

(84) Designated Contracting States: AT CH DE ES FR GB IT LI SE (30) Priority: 04.03.1998 SE 9800668 (71) Applicant: Purolator Products Company Tulsa, OK 74136 (US)	(72) Inventor: HEDMAN, Erik S-589 37 Linköping (SE) (74) Representative: Willquist, Bo  Willquist & Partners Patentbyra AB,Platensgatan 9 C 582 20 Linköping 582 20 Linköping (SE)