(19)

(11)

EP 1 293 007 A1

(12)

(43) Date of publication: 19.03.2003 Bulletin 2003/12 (21) Application number: 01952871.0 (22) Date of filing: 13.06.2001

(51) International Patent Classification (IPC)7: H01M 8/24, H01M 8/04 (86) International application number: PCT/US0140/990 (87) International publication number: WO 0109/7314 (20.12.2001 Gazette 2001/51)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (30) Priority: 13.06.2000 US 211444 P (71) Applicant: California Institute of Technology Pasadena, CA 91125 (US)

(72) Inventors: NARAYANAN, Sekharipuram R.,California Inst. Tech Pasadena, CA 91109 (US) VALDEZ, Thomas I.,California Inst. Techn. Jet Pasadena, CA 91109 (US) CLARA, Filberto,California Inst. Techn. Jet Pasadena, CA 91109 (US) FRANK, Harvey,California Inst. Techn. Jet Pasadena, CA 91109 (US) (74) Representative: Lloyd, Patrick Alexander Desmond  Reddie & Grose16 Theobalds Road London WC1X 8PL London WC1X 8PL (GB)