(19)

(11)

EP 0 879 273 A1

(12)

(43) Date of publication: 25.11.1998 Bulletin 1998/48 (21) Application number: 97900905.0 (22) Date of filing: 24.01.1997

(51) International Patent Classification (IPC):  B09B 3/ 00( . ) C10G 7/ 00( . ) C10G 51/ 02( . ) C10B 57/ 04( . ) C10G 9/ 00( . ) C10M 175/ 00( . ) (86) International application number: PCT/CA1997/000053 (87) International publication number: WO 1997/027273 (31.07.1997 Gazette 1997/33)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV RO SI (30) Priority: 26.01.1996 US 19960592478 (71) Applicant: Yu, Heshui Toronto, Ontario M5A 3W7 (CA)	(72) Inventor: Yu, Heshui Toronto, Ontario M5A 3W7 (CA) (74) Representative: Matthews, Heather Clare, et al  Keith W Nash & Co Pearl Assurance House 90-92 Regent Street Cambridge CB2 1DP Cambridge CB2 1DP (GB)