(19)

(11)

EP 0 569 391 A1

(12)

(43) Date of publication: 18.11.1993 Bulletin 1993/46 (21) Application number: 92902758.0 (22) Date of filing: 23.12.1991

(51) International Patent Classification (IPC):  C04B 35/ 583( . ) (86) International application number: PCT/SE1991/000907 (87) International publication number: WO 1992/012107 (23.07.1992 Gazette 1992/19)

(84) Designated Contracting States: AT CH DE FR GB IT LI SE (30) Priority: 09.01.1991 SE 19910000054 (71) Applicant: ABB POWDERMET AB S-735 23 Surahammar (SE)	(72) Inventors: SUNNERKRANTZ, Pär-Anders S-724 63 Väster s (SE) WEST, Roger S-724 68 Väster s (SE) (74) Representative: Boecker, Joachim, Dr.-Ing.  Adelonstrasse 58 D-65929 Frankfurt am Main D-65929 Frankfurt am Main (DE)