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US 5,968,210 AGranted
Electrolytic capacitor and method of manufacture
AssigneePacesetter, Inc.
InventorsThomas F. Strange, Paul Lunsmann
Life of this patent
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Abstract
A method of manufacturing a capacitor by highly etching a foil sheet, and at selected relief portions of the sheet, reducing the surface area coefficient. An anode sheet is cut from the foil sheet and assembled with other capacitor components. The surface area coefficient may be reduced by coining or mechanically compressing at the selected relief portions, and an oxide layer may be formed on the sheet after coining.
Claims12
A method of manufacturing a capacitor comprising the steps:
- providing a foil sheet;
- etching the foil sheet to generate a surface with an elevated surface area coefficient;
- at relief portions of the sheet, reducing the surface area coefficient;
- cutting an anode sheet from the foil sheet;
- and
- assembling the anode sheet with other capacitor components.
3 more elements
A method of manufacturing a capacitor comprising the steps:
- providing an etched foil sheet having an elevated surface area coefficient;
- at relief portions of the sheet, reducing the surface area coefficient;
- forming an oxide layer on the sheet;
- cutting an anode sheet from the foil sheet;
- and
- assembling the anode sheet with other capacitor components.
3 more elements
Dependencies are inferred from the claim text.