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:
Jul. 19, 2011
Filed:
Dec. 07, 2004
Applicants:
Masahiro Masuzawa, Saitama-ken, JP;
Shigeho Tanigawa, Saitama-ken, JP;
Masahiro Mita, Saitama-ken, JP;
Keiko Kikuchi, Saitama-ken, JP;
Inventors:
Masahiro Masuzawa, Saitama-ken, JP;
Shigeho Tanigawa, Saitama-ken, JP;
Masahiro Mita, Saitama-ken, JP;
Keiko Kikuchi, Saitama-ken, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/02 (2006.01); B22F 7/02 (2006.01); H02K 15/03 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rotor comprising bonded magnet portions mainly composed of magnet powder and a binder, which are embedded in a soft magnetic portion mainly composed of soft magnetic powder and a binder, the rotor being produced by a compression-molding method, and the magnetic pole surfaces of the bonded magnet portions being embedded in the soft magnetic portion.