Method of anodizing valve metal derived anode bodies and electrolyte therefore
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United States of America Patent
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Mar 16, 2010
Grant Date -
Dec 1, 2005
app pub date -
Jul 29, 2005
filing date -
Jun 17, 2003
priority date (Note) -
Expired
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Abstract
An electrolyte solution for anodizing a metal and a capacitor comprising the anodized metal. The electrolyte comprises more than about 5%, by weight, and less than about 30%, by weight, water; about 0.1 to 20%, by weight, ionogen and an aprotic polar solvent. The ionogen comprises phosphoric acid and an alkanol amine in an amount, and ratio, sufficient to maintain a pH of about 4 to about 9.
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