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. 21, 2010
Filed:
Jul. 17, 2008
Kiyoto Nakamura, Tokyo, JP;
Hiroshi Arikawa, Tokyo, JP;
Yoshiaki Moro, Tokyo, JP;
Hirokazu Sampei, Tokyo, JP;
Kiyoto Nakamura, Tokyo, JP;
Hiroshi Arikawa, Tokyo, JP;
Yoshiaki Moro, Tokyo, JP;
Hirokazu Sampei, Tokyo, JP;
Advantest Corporation, Tokyo, JP;
Abstract
Provided is a method for producing a contact device, including a step of forming a first conductive film; a step of forming a second conductive film containing a metal or an alloy of the metal on the first conductive film; a step of forming a third conductive film on the second conductive film; and a step of forming a surface layer on the third conductive film, the surface layer containing an oxidative product of the metal in the second conductive film, which metal has been diffused to be precipitated out from the surface of the third conductive film and oxidized.