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. 11, 2006
Filed:
Aug. 19, 2003
Applicants:
Yoshimasa Takahashi, Chiyoda-ku, JP;
Hironori Kodama, Chiyoda-ku, JP;
Yutaka Kobayashi, Chiyoda-ku, JP;
Keiichi Mashino, Chiyoda-ku, JP;
Syouju Masumoto, Chiyoda-ku, JP;
Inventors:
Yoshimasa Takahashi, Chiyoda-ku, JP;
Hironori Kodama, Chiyoda-ku, JP;
Yutaka Kobayashi, Chiyoda-ku, JP;
Keiichi Mashino, Chiyoda-ku, JP;
Syouju Masumoto, Chiyoda-ku, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A multi-phase alternating-current rotational electric machine wherein semiconductor switching devices are electrically insulated from heat sinks, and the heat sinks are grounded to the housing and thermally separated in each phase.