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:
Feb. 16, 2010
Filed:
Jul. 06, 2006
Shigeru Kikuchi, Hitachi, JP;
Ayumu Morita, Hitachi, JP;
Masato Kobayashi, Hitachi, JP;
Satoru Kajiwara, Hitachi, JP;
Noboru Baba, Hitachiota, JP;
Shigeru Kikuchi, Hitachi, JP;
Ayumu Morita, Hitachi, JP;
Masato Kobayashi, Hitachi, JP;
Satoru Kajiwara, Hitachi, JP;
Noboru Baba, Hitachiota, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An electrical contact used herein comprises chromium; one of copper and silver; and a carbide, in which the electrical contact comprises a matrix and chromium, the matrix phase mainly comprising one of copper and silver, and the chromium being surrounded by the carbide and dispersed in the matrix. The electrical contact contains 1 to 30 percent by weight of a carbide, with the balance being copper. Another electrical contact contains chromium, copper, and a carbide and has a weight ratio of chromium to the carbide within the range of 1:1.5 to 1:50.