Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
November 4, 2008
Patent Application Number
11688332
Date Filed
March 20, 2007
Patent Primary Examiner
Patent abstract
An alumina sintered body comprises an alumina substrate having a first main surface and a second main surface opposing each other, an embedded film electrode made of a metal and embedded in the alumina substrate at a depth HD of 0.4 mm or less from a first main surface SF1, and an embedded terminal formed of a metal, embedded in the alumina substrate nearer a second main surface SF2 side than the embedded electrode. The embedded terminal is in contact with the embedded electrode and a film thickness HE of the embedded electrode is 25 μm or less.
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