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. 31, 2016
Filed:
Sep. 14, 2011
Tsuyoshi Okazaki, Hiratsuka, JP;
Nobuyasu Ezawa, Ageo, JP;
Tsuyoshi Okazaki, Hiratsuka, JP;
Nobuyasu Ezawa, Ageo, JP;
Tanaka Kikinzoku Kogyo K.K., Chiyoda-ku, Tokyo, JP;
Abstract
An electrolytic electrode includes an electrode surface layer formed by a high-temperature heat treatment under a low oxygen partial pressure of 100 Pa or less and includes a valve metal oxide film, the electrode surface layer having, just beneath, a layer which includes a valve metal and a noble metal excluding silver and the noble metal is precipitated and dispersed in a crystal grain boundary of the valve metal, wherein a crystal of the valve metal in a range of down to 30 μm in a vertical depth direction from the electrode surface is a crystal grain being elongated in a vertical cross-section from the electrode surface and a content of the noble metal in a range of down to 10 μm in the vertical depth direction from the electrode surface is 5 at % or less.