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:
Sep. 23, 2014
Filed:
Mar. 27, 2012
Applicants:
Tomonaga Iwatsu, Hiroshima, JP;
Yukio Katagiri, Hiroshima, JP;
Susumu Fujiwara, Hiroshima, JP;
Shigeru Morikawa, Hiroshima, JP;
Inventors:
Tomonaga Iwatsu, Hiroshima, JP;
Yukio Katagiri, Hiroshima, JP;
Susumu Fujiwara, Hiroshima, JP;
Shigeru Morikawa, Hiroshima, JP;
Assignee:
Nisshin Steel Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/02 (2006.01); H02K 1/27 (2006.01); H02K 1/00 (2006.01);
U.S. Cl.
CPC ...
H02K 1/272 (2013.01); H02K 1/2766 (2013.01); H02K 2213/03 (2013.01); H02K 1/02 (2013.01);
Abstract
A rotor iron core is used, which is formed by laminating a base steel sheets with a magnetic flux density (B8000) of 1.65 T or more as measured at a magnetic field strength of 8000 A/m and a coercivity of 100 A/m or more.