The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2001
Filed:
Dec. 01, 1998
Applicant:
Inventors:
Akinori Kojima, Niigata-ken, JP;
Akihiro Makino, Niigata-ken, JP;
Takashi Hatanai, Niigata-ken, JP;
Yutaka Yamamoto, Niigata-ken, JP;
Akihisa Inoue, Miyagi-ken, JP;
Assignee:
ALPS Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/057 ; H01F 1/058 ; H01F 1/053 ;
U.S. Cl.
CPC ...
H01F 1/057 ; H01F 1/058 ; H01F 1/053 ;
Abstract
A hard magnetic material contains Co as a main component, at least one element Q of P, C, Si and B, and Sm, and an amorphous phase and a fine crystalline phase. The texture of the hard magnetic material contains 50% by volume or more of fine crystalline phase having an average crystal grain size of 100 nm or less, and has a mixed phase state containing a soft magnetic phase and a hard magnetic phase. Further, anisotropy is imparted to the crystal axis of the hard magnetic phase.