(19)

(11)

EP 0 705 232 A1

(12)

(43) Date of publication: 10.04.1996 Bulletin 1996/15 (21) Application number: 93903695.0 (22) Date of filing: 04.08.1992

(51) International Patent Classification (IPC):  B01J 21/ 18( . ) B01J 37/ 08( . ) C07C 5/ 22( . ) C25B 11/ 12( . ) H01M 4/ 90( . ) H01M 4/ 92( . ) B01J 35/ 02( . ) C04B 35/ 524( . ) C25B 11/ 04( . ) G01N 27/ 30( . ) H01M 4/ 96( . ) (86) International application number: PCT/US1992/006458 (87) International publication number: WO 1993/004220 (04.03.1993 Gazette 1993/06)

(84) Designated Contracting States: BE DE FR GB (30) Priority: 21.08.1991 US 19910748263 (71) Applicants: CALLSTROM, Matthew R. Columbus, OH 43221 (US) McCREERY, Richard L. Worthington, OH 43085 (US)	(72) Inventors: CALLSTROM, Matthew R. Columbus, OH 43221 (US) McCREERY, Richard L. Worthington, OH 43085 (US) (74) Representative: Deans, Michael John Percy, et al  Lloyd Wise, Tregear & Co., Commonwealth House, 1-19 New Oxford Street London WC1A 1LW London WC1A 1LW (GB)