Metal foil for capacitor, solid electrolytic capacitor using the foil and production methods of the foil and the capacitor
US7289314B2 · kind B2 · utility
11Cited by
7References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2003 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Jun 14, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G13/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A metal foil for capacitor element is produced through a process including steps of etching and ten electrochemically forming a metal foil after making cut lines each in a shape of a capacitor element with at least a part of a portion predetermined to be an anode-leading-out-part left uncut. The step of etching the foil is preferably performed with the anode-leading-out-parts being protected by protective material. Solid electrolytic capacitor elements prepared by using the metal foil have narrow variation in capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.