(19)

(11)

EP 0 416 018 A1

(12)

(43) Date of publication: 13.03.1991 Bulletin 1991/11 (21) Application number: 89906673.0 (22) Date of filing: 19.05.1989

(51) International Patent Classification (IPC):  B01J 2/ 14( . ) C05G 3/ 00( . ) (86) International application number: PCT/AU1989/000224 (87) International publication number: WO 1989/011462 (30.11.1989 Gazette 1989/28)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 25.05.1988 AU 19880008432 13.12.1988 AU 19880001933 (71) Applicant: LEET, Robert Peng Kwan Wadong, VIC 3758 (AU)	(72) Inventor: LEET, Robert Peng Kwan Wadong, VIC 3758 (AU) (74) Representative: Skerrett, John Norton Haigh, et al  H.N. & W.S. Skerrett Charles House 148/9 Great Charles Street Birmingham B3 3HT Birmingham B3 3HT (GB)