(19)

(11)

EP 0 907 768 A1

(12)

(43) Date of publication: 14.04.1999 Bulletin 1999/15 (21) Application number: 97921977.0 (22) Date of filing: 15.05.1997

(51) International Patent Classification (IPC):  D01B 1/ 04( . ) (86) International application number: PCT/GB1997/001326 (87) International publication number: WO 1997/045572 (04.12.1997 Gazette 1997/52)

(84) Designated Contracting States: ES GB GR IT (30) Priority: 24.05.1996 GB 19960011005 (71) Applicant: Templeton Process Developments Limited Croydon CR9 1PG (GB)	(72) Inventor: PAYNE, Trevor Nottingham NG4 3FJ (GB) (74) Representative: King, James Bertram  KINGS PATENT AGENCY LIMITED 73 Farringdon Road London EC1M 3JB London EC1M 3JB (GB)