Plasma treatment of anodic oxides for electrolytic capacitors
US7286336B2 · kind B2 · utility
15Cited by
14References
19Claims
0Family size
Assignee
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Key dates
| Filing date | May 13, 2005 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Jan 25, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An oxygen plasma process for treating a dielectric oxide layer, particularly an anodic oxide, subsequent to its incorporation into an electrolytic capacitor is described. The present treatment reduces DC leakage and improves shelf life stability of the resulting capacitor in comparison to anodic oxides treated in a conventional manner. This is important for critical applications such as implantable cardioverter defibrillators where capacitor charging time and charge/discharge energy efficiency are critical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.