(19)
(11) EP 0 504 397 A1

(12)

(43) Date of publication:
23.09.1992 Bulletin 1992/39

(21) Application number: 92900166.0

(22) Date of filing: 08.10.1991
(51) International Patent Classification (IPC): 
B22F 3/ 00( . )
B22F 9/ 08( . )
H01F 1/ 08( . )
B22F 1/ 02( . )
H01F 1/ 057( . )
H01F 41/ 02( . )
(86) International application number:
PCT/US1991/007431
(87) International publication number:
WO 1992/006479 (16.04.1992 Gazette 1992/09)
(84) Designated Contracting States:
DE FR GB IT SE

(30) Priority: 09.10.1990 US 19900593944

(71) Applicant: IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.
Ames, Iowa 50011 (US)

(72) Inventors:
  • LOGRASSO, Barbara, K.
    Ames, IA 50010 (US)
  • ANDERSON, Iver, E.
    Ames, IA 50010 (US)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Maximilianstrasse 58
D-80538 München
D-80538 München (DE)

   


(54) METHOD OF MAKING PERMANENT MAGNETS