(19)

(11)

EP 0 028 228 A1

(12)

(43) Date of publication: 13.05.1981 Bulletin 1981/19 (21) Application number: 80900780.0 (22) Date of filing: 08.05.1980

(51) International Patent Classification (IPC):  H01M 10/ 12( . ) H01M 10/ 34( . ) (86) International application number: PCT/GB1980/000084 (87) International publication number: WO 1980/002474 (13.11.1980 Gazette 1980/26)

(84) Designated Contracting States: DE FR NL SE (30) Priority: 09.05.1979 GB 19790016118 (71) Applicant: CHLORIDE GROUP PUBLIC LIMITED COMPANY London SW1W 0AU (GB)	(72) Inventor: CULPIN, Barry Bolton Lancashire (GB) (74) Representative: Kearney, Kevin David Nicholas, et al  KILBURN & STRODE 30 John Street London, WC1N 2DD London, WC1N 2DD (GB)