(19)

(11)

EP 1 011 857 A1

(12)

(43) Date of publication: 28.06.2000 Bulletin 2000/26 (21) Application number: 98943339.6 (22) Date of filing: 24.08.1998

(51) International Patent Classification (IPC)7: B01J 19/24, B01D 53/77, B01J 10/00 (86) International application number: PCT/US9817/491 (87) International publication number: WO 9910/095 (04.03.1999 Gazette 1999/09)

(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: 26.08.1997 US 58945 P (71) Applicant: Ohio University Athens, OH 45701-3751 (US)	(72) Inventor: JEPSON, William, P. Athens, OH 45701 (US) (74) Representative: Caldwell, Judith Margaret et al David Keltie Associates,12 New Fetter Lane London EC4A 1AP London EC4A 1AP (GB)