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. 10, 2005
Filed:
Mar. 13, 2002
Kazuhisa Mori, Hitachi, JP;
Takashi Ikimi, Hitachi, JP;
Shuji Katoh, Hitachiota, JP;
Yutaka Sato, Hitachi, JP;
Kazuhisa Mori, Hitachi, JP;
Takashi Ikimi, Hitachi, JP;
Shuji Katoh, Hitachiota, JP;
Yutaka Sato, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A semiconductor power module capable of efficiently utilizing the performance of the module and facilitating management of the module in custody. The semiconductor power module having one or more semiconductor power switching elements and a drive unit is provided with a non-volatile memory for storing use history of the module and a drive unit. The use history contains information of one of the number of switching times of the semiconductor power switching element, the number of over-current detections of the semiconductor power switching element and a temperature rise of the semiconductor power module.