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:
Jan. 10, 1989
Filed:
May. 15, 1987
Showa Denko Kabushiki Kaisha, Tokyo, JP;
Abstract
Disclosed is a solid electrolytic capacitor comprising a plurality of superposed etched foils of a valve metal having an oxide film surface layer, which are connected with a positive electrode terminal, a semiconductor layer formed on the oxide film layer, an electroconductive layer formed on the semiconductor layer, and a negative electrode terminal common to the respective foils, which is formed on the electroconductive layer. Also disclosed is a polar type solid electrolytic capacitor in which first foils connected with a negative electrode terminal and second foils of a valve metal each having an oxide film surface layer connected with a positive electrode terminal are alternately superposed one upon the other, and a semiconductor layer is formed among the first foils and the second foils. A bipolar type solid electrolytic capacitor is also disclosed in which first valve metal foils each having an oxide film surface layer and connected with one lead terminal, and second valve metal foils each having an oxide film surface layer and connected with the other lead terminal are alternately superposed one upon the other and a semiconductor layer is formed among the first foils and the second foils.