(19)

(11)

EP 1 144 066 A1

(12)

(43) Date of publication: 17.10.2001 Bulletin 2001/42 (21) Application number: 98965529.5 (22) Date of filing: 29.12.1998

(51) International Patent Classification (IPC)7: B01D 12/00, F26B 5/00, B01D 17/025, B01D 17/05 (86) International application number: PCT/US9827/777 (87) International publication number: WO 0038/813 (06.07.2000 Gazette 2000/27)

(84) Designated Contracting States: DE FR IT (71) Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY St. Paul,Minnesota 55133-3427 (US)	(72) Inventor: BOYD, Steven, D. Woodbury, MN 55125 (US) (74) Representative: VOSSIUS & PARTNER  Siebertstrasse 4 81675 München 81675 München (DE)