Electrolytic capacitor and method of producing the same
US6989289B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2000 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Oct 2, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides an electrolytic capacitor having a large capacitance sufficiently close to its design capacitance, and a method of easily producing such an electrolytic capacitor wherein a cathode-side conductive polymer layer of an electrolyzing electrode is formed on at least one side surface of an anode valve metal foil having through holes 20 and a coarsened surface, electrolysis is carried out in a conductive monomer solution, with the polymer layer used as the anode, and an electrolytically-formed conductive polymer layer is formed on the surface of the dielectric oxide film of the valve metal foil, thereby obtaining an electrolytic capacitor, whereby it is possible to easily obtain an electrolytic capacitor having a large capacitance sufficiently close to its design capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.