EP 0289680 B1 19940622 - Permanent magnet and method of producing the same.
Title (en)
Permanent magnet and method of producing the same.
Title (de)
Dauermagnet und dessen Herstellungsverfahren.
Title (fr)
Aimant permanent et son procédé de fabrication.
Publication
Application
Priority
JP 10462387 A 19870430
Abstract (en)
[origin: EP0289680A2] A permanent magnet made from an alloy comprising at least one rare earth element, iron and boron characterised in that the average grain diameter of the crystals of the alloy is not more than 150 mu m, the carbon content and the oxygen content of the alloy being not more than 400 ppm and not more than 1000 ppm respectively.
IPC 1-7
IPC 8 full level
H01F 1/057 (2006.01)
CPC (source: EP KR)
H01F 1/04 (2013.01 - KR); H01F 1/057 (2013.01 - EP); H01F 7/00 (2013.01 - KR)
Citation (examination)
JOURNAL DE PHYSIQUE, COLLOQUE C8, Supplément au n° 12, Tome 49, décembre 1988, pages 631-632
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0289680 A2 19881109; EP 0289680 A3 19900606; EP 0289680 B1 19940622; AT E107795 T1 19940715; DE 3750136 D1 19940728; DE 3750136 T2 19941006; KR 880013195 A 19881130; KR 930002559 B1 19930403
DOCDB simple family (application)
EP 87308666 A 19870930; AT 87308666 T 19870930; DE 3750136 T 19870930; KR 870009551 A 19870831