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(11)

EP 1 073 526 A1

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(43) Date of publication: 07.02.2001 Bulletin 2001/06 (21) Application number: 99905370.5 (22) Date of filing: 22.02.1999

(51) International Patent Classification (IPC)7: B04C 5/103, B01D 17/038 (86) International application number: PCT/NO9900/055 (87) International publication number: WO 9943/439 (02.09.1999 Gazette 1999/35)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 24.02.1998 NO 980767 (71) Applicant: READ PROCESS ENGINEERING A/S 1364 Hvalstad (NO)	(72) Inventor: MICHELET, Jan, Fredrik N-1370 Asker (NO) (74) Representative: Thierry-Carstensen, Ole Jean et al Chas. Hude A/S,33 H.C. Andersens Boulevard 1553 Copenhagen V 1553 Copenhagen V (DK)