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:
Apr. 23, 2013
Filed:
Jan. 15, 2009
Shigeru Kikuchi, Hitachi, JP;
Satoru Kajiwara, Hitachi, JP;
Masato Kobayashi, Hitachi, JP;
Misuk Yamazaki, Kashiwa, JP;
Shigeru Kikuchi, Hitachi, JP;
Satoru Kajiwara, Hitachi, JP;
Masato Kobayashi, Hitachi, JP;
Misuk Yamazaki, Kashiwa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An electrical contact comprising a contact layer for making a contact with an opposite electrical contact and a high conductive layer in an opposite side of the contact layer, the layers being integrally connected to each other, wherein the contact layer contains Cr, Cu and Te, and the high conductive layer contains copper as a main component, and wherein the high conductive layer is provided with a means for suppressing warp of the contact layer at the time of turning on of the contacts.