(19)

(11)

EP 0 453 486 A1

(12)

(43) Date of publication: 30.10.1991 Bulletin 1991/44 (21) Application number: 90902166.0 (22) Date of filing: 09.01.1990

(51) International Patent Classification (IPC):  C23F 13/ 02( . ) (86) International application number: PCT/DK1990/000006 (87) International publication number: WO 1990/008204 (26.07.1990 Gazette 1990/17)

(84) Designated Contracting States: BE DE DK FR GB NL SE (30) Priority: 11.01.1989 DK 19890000129 (71) Applicants: HOEGBERG, Joergen Leon DK-8464 Galten (DK) SOERENSEN, Bent Grumstrup DK-8464 Galten (DK)	(72) Inventors: HOEGBERG, Joergen Leon DK-8464 Galten (DK) SOERENSEN, Bent Grumstrup DK-8464 Galten (DK) (74) Representative: Gregersen, Niels Henrik  Skanderborgvej 40 DK-8000 Aarhus C DK-8000 Aarhus C (DK)