(19)

(11)

EP 0 580 613 A1

(12)

(43) Date of publication: 02.02.1994 Bulletin 1994/05 (21) Application number: 92906890.0 (22) Date of filing: 17.03.1992

(51) International Patent Classification (IPC):  C04B 14/ 10( . ) C04B 22/ 06( . ) C04B 28/ 02( . ) C04B 18/ 26( . ) C04B 22/ 14( . ) (86) International application number: PCT/AU1992/000114 (87) International publication number: WO 1992/017416 (15.10.1992 Gazette 1992/26)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 08.04.1991 AU 19910074214 (71) Applicant: KRUSS, Leon Waverley, NSW 2024 (AU)	(72) Inventor: KRUSS, Leon Waverley, NSW 2024 (AU) (74) Representative: Dunlop, Brian Kenneth Charles, et al  c/o Wynne-Jones, Lainé & James 22 Rodney Road Cheltenham Gloucestershire GL50 1JJ Cheltenham Gloucestershire GL50 1JJ (GB)