(19)

(11)

EP 1 064 344 A1

(12)

(43) Date of publication: 03.01.2001 Bulletin 2001/01 (21) Application number: 98967072.4 (22) Date of filing: 18.12.1998

(51) International Patent Classification (IPC)7: C10L 1/32 (86) International application number: PCT/US9827/012 (87) International publication number: WO 9931/204 (24.06.1999 Gazette 1999/25)

(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: 18.12.1997 US 992893 (71) Applicant: Quantum Energy Technologies Cambridge, MA 02142 (US)	(72) Inventors: Haldeman, Charles W. Concord, MA 01742 (US) Ahern, Brian S. Boxboro, MA 01719 (US) Johnson, Keith H. Cambridge, MA 20138 (US) (74) Representative: Harvey, David Gareth et al Graham Watt & Co.Riverhead SevenoaksKent TN13 2BN SevenoaksKent TN13 2BN (GB)