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:
Mar. 28, 2017
Filed:
Apr. 09, 2013
Showa Denko K.k., Tokyo, JP;
Kazumi Naito, Tokyo, JP;
Katsutoshi Tamura, Tokyo, JP;
SHOW A DENKO K.K., Tokyo, JP;
Abstract
A capacitor having at least an anode body composed of a tungsten sintered compact and having less leakage current under high-voltage conditions and less variation in leakage current values, obtained by a production method including the steps of: compacting a tungsten powder to obtain a compression body; firing the compression body to obtain an anode body; applying voltage to the anode body, which is used as an positive electrode, in an alkaline fluid; chemically converting the surface layer of the anode body into a dielectric; optionally removing water from the anode body; and heat-treating the anode body, whose surface has been chemically converted into a dielectric, at a temperature of 100° C. or more and 260° C. or less.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile